Service Degradation - Conversation API WhatsApp - BR
Monitoring - A fix has been implemented and we are monitoring the results.
Sep 04, 2026 - 04:33 UTC
Investigating - We are experiencing a service degradation impacting the Conversation API WhatsApp Message Delivery in the BR region.

Impact: Clients may experience no delivery on WhatsApp

Incident Start Time: 2026-09-03 20:00 UTC

We are actively investigating and will provide further updates as more information becomes available.
Sep 04, 2026 - 02:07 UTC
External Maintenance - United States - T-Mobile
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Sep 04, 2026 - 03:00 UTC
Scheduled - United States - T-Mobile has scheduled a maintenance.

Impact SMS: Clients may experience delayed or failed Short Code and 10DLC MT/MO traffic towards T-Mobile US
Impact MMS: Clients may experience delayed or failed Short Code and 10DLC MT/MO traffic towards T-Mobile US

Maintenance Start Time: 2026-09-04 03:00 UTC
Maintenance End Time: 2026-09-04 11:00 UTC
Sep 4, 2026 03:00-11:00 UTC
Interruption of Stats database
Monitoring - We have identified the issue and have applied a fix.
We are currently monitoring the platform
Sep 03, 2026 - 21:44 UTC
Update - We are continuing to investigate this issue.
Sep 03, 2026 - 21:43 UTC
Investigating - We are investigating
Sep 03, 2026 - 21:43 UTC
External Connectivity Under Maintenance
SMS - APAC Operational
SMS - EMEA Operational
SMS - LATAM Operational
SMS - CA - ShortCode Operational
SMS - CA - Toll Free Operational
SMS - US - ShortCode Under Maintenance
SMS - US - Toll Free Operational
SMS - US - 10DLC Under Maintenance
MMS - US Under Maintenance
MMS - US - Toll Free Operational
MMS - US - 10DLC Under Maintenance
MMS - AU Operational
MMS - APAC Operational
Voice Operational
Data Calling Operational
Phone Calling (PSTN) Operational
Video Calling Operational
SIP Trunk Operational
Conversation API Operational
Core Operational
WhatsApp Operational
SMS Operational
RCS Operational
MMS Operational
Messenger Operational
Instagram Operational
Viber Bot Operational
Viber Messaging Operational
Telegram Operational
Kakaotalk Operational
Line Operational
WeChat Operational
Apple Messages Operational
Omnichannel Connector Operational
Batch API Operational
Sinch Push Operational
Sinch Chat Operational
Template Management API Operational
Smart Conversations Operational
Verification Operational
Flash Call Verification Operational
SMS Verification Operational
Verification Text to Speech Operational
Messaging APIs Operational
SMPP - US Operational
SMPP - EU Operational
SMPP - AU Operational
SMPP - CA Operational
SMPP - BR Operational
HTTP - US Operational
HTTP - EU Operational
HTTP - AU Operational
HTTP - CA Operational
HTTP - BR Operational
REST - US Operational
REST - EU Operational
REST - AU Operational
REST - CA Operational
REST - BR Operational
MMS - US Operational
MMS - AU Operational
MMS - CA Operational
RCS - US Operational
RCS - EU Operational
SPAN - US Operational
SMS Template Management API - US Operational
US Disconnect File Service - US Operational
🔗 EXTERNAL - Campaign Registry status - US Operational
sFTP2SMS - BR Operational
SMS Template Management API - EU Operational
TFN registration Operational
Provisioning API Operational
Provisioning API Core Operational
WhatsApp Provisioning API Operational
Webhook Provisioning API Operational
Bundles Provisioning API Operational
KakaoTalk Provisioning API Operational
RCS Provisioning API Operational
Sinch DI Services Operational
MM4 (MMS 365) Operational
MM7 (MMS 365) Operational
Message Manager Operational
E-mail 365 Operational
SMS 365 Operator RoW Operational
SMS 365 Operator US Operational
International SMS 365 Operational
Lookup API Endpoints Operational
ENUM AU Operational
HTTP AU Operational
ENUM EU Operational
HTTP EU Operational
ENUM US Operational
HTTP US Operational
ENUM CA Operational
HTTP CA Operational
HTTP BR Operational
Contact Pro Operational
Contact Pro - AF (South Africa) Operational
Contact Pro - AU (Australia) Operational
Contact Pro - EU (Europe) Operational
Contact Pro - NA (North America) Operational
Migrated APIs Operational
Redhot XML (mBlox) Operational
E3 (Dialogue) Operational
SMS (Legacy Sinch) Operational
HTTP API (TWW) Operational
Numbers API Operational
Dashboard.sinch.com Operational
Payment Operational
SMS Administration Operational
Numbers Administration Operational
Analytics Operational
Customer Support Operational
2FA Operational
US Campaigns Operational
Login/Sign up Operational
Campaigns Degraded Performance
Campaigns (France 🇫🇷) Degraded Performance
Campaigns API (France 🇫🇷) Degraded Performance
sFTP Connectors (France 🇫🇷) Operational
Campaigns (Europe 🇪🇺) Operational
Campaigns API (Europe 🇪🇺) Operational
sFTP Connectors (Europe 🇪🇺) Operational
Campaigns (North America 🇺🇸 / 🇨🇦) Operational
Campaigns API (North America 🇺🇸 / 🇨🇦) Operational
sFTP Connectors (North America 🇺🇸 / 🇨🇦) Operational
Elastic SIP Trunking Operational
API Operational
Inbound Calling Operational
Outbound Calling Operational
International Calling Operational
9-1-1 / Emergency Services Operational
User Interface Operational
Fax API Operational
API Operational
Inbound Faxing Operational
Outbound Faxing Operational
Notifications Operational
Fax to Email Operational
User Interface Operational
Sinch Engage Operational
Web Portal Operational
API, SMPP, webhooks, email to SMS Operational
Engage Classic (appengage.sinch.com) Operational
Messaging Connectivity Operational
Legacy Brands (MessageNet, DirectSMS, MobiPost, SMS Central, Wholesale SMS, Streetdata) Operational
Sinch Engage Integrations Operational
Shopify Operational
Hubspot Operational
Netsuite Operational
Zoho CRM Operational
Big Commerce Operational
Salesforce Operational
Active Campaign Operational
Microsoft Dynamics Operational
Number Lookup API v2 Operational
API Operational
Line Type Operational
RND - Reassigned Number Database Operational
Sim Swap Operational
User Interface Operational
Chatlayer Operational
Chatlayer Bot Engine - US Operational
Chatlayer Voice Engine - US Operational
Chatlayer App Integrations - US Operational
Chatlayer Bot Engine - EMEA Operational
Chatlayer Voice Engine - EMEA Operational
Chatlayer App Integrations - EMEA Operational
Chatlayer Bot Engine - South America Operational
Chatlayer Voice Engine - South America Operational
Chatlayer App Integrations - South America Operational
Chatlayer Bot Engine - India Operational
Chatlayer App Integrations - India Operational
Operational
Degraded Performance
Partial Outage
Major Outage
Maintenance

Scheduled Maintenance

Campaigns Application Maintenance Sep 4, 2026 07:00-07:30 UTC

Technical maintenance
Posted on Sep 03, 2026 - 14:48 UTC

Sinch Digital Interconnect | Customer Management Portal | Planned Maintenance PCR # PCRSDI-12347 Sep 8, 2026 04:00-05:00 UTC

Start Date and Time: 08-Sep-2026 - 04:00 UTC
End Date and Time : 08-Sep-2026 - 05:00 UTC

Description:
We will be performing maintenance to upgrade the server hosting the Customer Management Portal.

This portal is accessed by the URL - https://eu5.cmp.sdi.sinch.com/SAPCMP/login#

Action required: None.

Impact: Customer Management Portal will be offline during the maintenance window. Customers are advised not to use the portal during this period.

If you experience any issues during or after this maintenance, please contact the Operator Service NOC immediately at operatorservices.noc@sinch.com or +1 470.300.8394 (select 'support' from the menu, option 2 for Digital Interconnect and then option 1) and reference this. If you have any questions or concerns, please contact your Account Manager.
Posted on Sep 01, 2026 - 17:24 UTC

Sinch Internal Maintenance – Chatlayer Platform (EMEA region) Sep 9, 2026 06:00-07:00 UTC

We are writing to inform you that, as part of our continuous efforts to improve the performance and reliability of the Chatlayer platform, we will be performing a scheduled Kafka cluster upgrade at the times specified below.

Type: Scheduled Maintenance – Chatlayer Kafka Upgrade

Maintenance Start Time: 2026-09-09 06:00 UTC
Maintenance End Time: 2026-09-09 07:00 UTC

Impact: Customers may experience brief, intermittent delays to bot, voice, or integration traffic during their maintenance window. No message loss or extended downtime is expected.

We appreciate your patience and apologize for any inconvenience during this maintenance period. If for any reason the maintenance is extended or rescheduled, we will update this page accordingly.
Please contact support@sinch.com should you require further information or assistance.
Posted on Aug 21, 2026 - 12:57 UTC

Sinch Internal Maintenance – Chatlayer Platform (US region) Sep 9, 2026 08:00-09:00 UTC

We are writing to inform you that, as part of our continuous efforts to improve the performance and reliability of the Chatlayer platform, we will be performing a scheduled Kafka cluster upgrade at the times specified below.

Type: Scheduled Maintenance – Chatlayer Kafka Upgrade

Maintenance Start Time: 2026-09-09 08:00 UTC
Maintenance End Time: 2026-09-09 09:00 UTC

Impact: Customers may experience brief, intermittent delays to bot, voice, or integration traffic during their maintenance window. No message loss or extended downtime is expected.

We appreciate your patience and apologize for any inconvenience during this maintenance period. If for any reason the maintenance is extended or rescheduled, we will update this page accordingly.
Please contact support@sinch.com should you require further information or assistance.
Posted on Aug 21, 2026 - 12:59 UTC

Sinch Internal Maintenance – Chatlayer Platform (South America region) Sep 9, 2026 09:00-10:00 UTC

We are writing to inform you that, as part of our continuous efforts to improve the performance and reliability of the Chatlayer platform, we will be performing a scheduled Kafka cluster upgrade at the times specified below.

Type: Scheduled Maintenance – Chatlayer Kafka Upgrade

Maintenance Start Time: 2026-09-09 09:00 UTC
Maintenance End Time: 2026-09-09 10:00 UTC

Impact: Customers may experience brief, intermittent delays to bot, voice, or integration traffic during their maintenance window. No message loss or extended downtime is expected.

We appreciate your patience and apologize for any inconvenience during this maintenance period. If for any reason the maintenance is extended or rescheduled, we will update this page accordingly.
Please contact support@sinch.com should you require further information or assistance.
Posted on Aug 21, 2026 - 13:00 UTC

Sinch Internal Maintenance – Chatlayer Platform (India region) Sep 9, 2026 15:00-16:00 UTC

We are writing to inform you that, as part of our continuous efforts to improve the performance and reliability of the Chatlayer platform, we will be performing a scheduled Kafka cluster upgrade at the times specified below.

Type: Scheduled Maintenance – Chatlayer Kafka Upgrade

Maintenance Start Time: 2026-09-09 15:00 UTC
Maintenance End Time: 2026-09-09 16:00 UTC

Impact: Customers may experience brief, intermittent delays to bot, voice, or integration traffic during their maintenance window. No message loss or extended downtime is expected.

We appreciate your patience and apologize for any inconvenience during this maintenance period. If for any reason the maintenance is extended or rescheduled, we will update this page accordingly.
Please contact support@sinch.com should you require further information or assistance.
Posted on Aug 21, 2026 - 13:02 UTC

Sinch Internal Maintenance - EU1 Network Infrastructure Sep 10, 2026 02:00-04:00 UTC

Update - Dear Client,

We are writing to inform you that the concerned maintenance activity has been rescheduled to the time window below:

Previous Start Time: 2026-09-10 19:00 UTC
Previous End Time: 2026-09-10 21:00 UTC

New Start Time: 2026-09-10 02:00 UTC
New End Time: 2026-09-10 04:00 UTC

Impact: Customers may experience multiple brief connectivity issues during the duration of this maintenance towards the impacted endpoints listed below.

Impacted endpoints:
eu1.smpp.api.sinch.com
eu1.httpsms.api.sinch.com
eu1.httplookup.api.sinch.com

To avoid connectivity issues we recommend connecting to the below endpoints during the duration of this maintenance.
Available endpoints:
eu3.smpp.api.sinch.com
eu3.httpsms.api.sinch.com
eu3.httplookup.api.sinch.com

If for any reason the maintenance is extended or cancelled we will advise you accordingly.
Please contact support@sinch.com should you require further information or assistance.
Sep 01, 2026 - 14:50 UTC
Scheduled - Dear Client,

We are reaching out to inform you that a maintenance will be performed on our EU1 network infrastructure during the scheduled time window below.

Type: Network Maintenance
Affected Site: EU1

Maintenance Start Time: 2026-09-10 19:00 UTC
Maintenance End Time: 2026-09-10 21:00 UTC

Impact: Customers may experience multiple brief connectivity issues during the duration of this maintenance towards the impacted endpoints listed below.

Impacted endpoints:
eu1.smpp.api.sinch.com
eu1.httpsms.api.sinch.com
eu1.httplookup.api.sinch.com

To avoid connectivity issues we recommend connecting to the below endpoints during the duration of this maintenance.
Available endpoints:
eu3.smpp.api.sinch.com
eu3.httpsms.api.sinch.com
eu3.httplookup.api.sinch.com

If for any reason the maintenance is extended or cancelled we will advise you accordingly.
Please contact support@sinch.com should you require further information or assistance.
Aug 27, 2026 - 17:14 UTC

Sinch Internal Maintenance - US2 Network Infrastructure Sep 10, 2026 04:00-07:00 UTC

Update - Dear Client,

We are writing to inform you that the concerned maintenance activity has been rescheduled to the time window below:

Previous Start Time: 2026-09-10 07:00 UTC
Previous End Time: 2026-09-10 09:00 UTC

New Start Time: 2026-09-10 04:00 UTC
New End Time: 2026-09-10 07:00 UTC

Impact: No expected impact.

If for any reason the maintenance is extended or cancelled we will advise you accordingly.
Please contact support@sinch.com should you require further information or assistance.
Sep 01, 2026 - 15:16 UTC
Scheduled - Dear Client,

We are reaching out to inform you that a maintenance will be performed on our US2 network infrastructure during the scheduled time window below.

Type: Network Maintenance
Affected Site: US2

Maintenance Start Time: 2026-09-10 07:00 UTC
Maintenance End Time: 2026-09-10 09:00 UTC

Impact: No expected impact.

If for any reason the maintenance is extended or cancelled we will advise you accordingly.
Please contact support@sinch.com should you require further information or assistance.
Aug 27, 2026 - 16:52 UTC

Demo environment maintenance Sep 10, 2026 08:30-09:30 UTC

Update - We will be undergoing scheduled maintenance during this time.
Sep 03, 2026 - 09:35 UTC
Scheduled - We will perform some maintenance in our demo environment in FRANCE.
This will impact:
* https://demo-connecteur.myelefant.com/
* https://demo.myelefant.com/
* https://demo-api.myelefant.com/

Production environment will NOT be impacted
Sep 10, 2026 - 09:33 UTC

FR Market Service Reminder Sep 10, 2026 21:00 - Sep 11, 2026 00:00 UTC

This is a reminder that sender ID restriction for alphanumeric senders will be enabled in the FR market on 10th of September.

Enablement will take place between September 10th, 2026, 21:00 UTC and September 11th, 2026, 00:00 UTC.
Posted on Aug 28, 2026 - 13:45 UTC

ES Market Service Reminder Sep 14, 2026 12:00-14:00 UTC

This is a reminder that sender ID validation for alphanumeric senders will be enabled in the ES market on 14th of September.

Enablement will take place between September 14th, 2026, 12:00 UTC and September 14th, 2026, 14:00 UTC.
Posted on Aug 28, 2026 - 13:46 UTC

Sinch Internal Maintenance - IN1 Network Infrastructure Sep 14, 2026 19:00-21:00 UTC

Update - Dear Client,

We are writing to inform you that the concerned maintenance activity has been rescheduled to the time window below:

Previous Start Time: 2026-09-10 12:00 UTC
Previous End Time: 2026-09-10 14:00 UTC

New Start Time: 2026-09-14 19:00 UTC
New End Time: 2026-09-14 21:00 UTC

Impact: No expected impact.

If for any reason the maintenance is extended or cancelled we will advise you accordingly.
Please contact support@sinch.com should you require further information or assistance.
Sep 01, 2026 - 15:41 UTC
Scheduled - Dear Client,

We are reaching out to inform you that a maintenance will be performed on our IN1 network infrastructure during the scheduled time window below.

Type: Network Maintenance
Affected Site: IN1

Maintenance Start Time: 2026-09-10 12:00 UTC
Maintenance End Time: 2026-09-10 14:00 UTC

Impact: No expected impact.

If for any reason the maintenance is extended or cancelled we will advise you accordingly.
Please contact support@sinch.com should you require further information or assistance.
Aug 27, 2026 - 17:06 UTC

Sinch Internal Maintenance - EU2 Network Infrastructure Sep 17, 2026 02:00-04:00 UTC

Dear Client,

We are reaching out to inform you that a maintenance will be performed on our EU2 network infrastructure during the scheduled time window below.

Type: Network Maintenance
Affected Site: EU2

Maintenance Start Time: 2026-09-17 02:00 UTC
Maintenance End Time: 2026-09-17 04:00 UTC

Impact: No expected impact.

If for any reason the maintenance is extended or cancelled we will advise you accordingly.
Please contact support@sinch.com should you require further information or assistance.
Posted on Sep 03, 2026 - 17:34 UTC

Sinch Internal Maintenance - MMS Sep 17, 2026 08:00-10:30 UTC

We are writing to inform you that as part of our continuous efforts to improve the performance and reliability of our platform, we will be performing a scheduled maintenance on MMS platform at the times specified below.

Type: Maintenance - MMS
Start Time: 2026-09-17 08:00 UTC
End Time: 2026-09-17 10:30 UTC

Impact MMS: Messages will be Queued and will be processed post upgrade. We expect intermittent delays during the maintenance window.

We appreciate your patience and apologize for any inconvenience experienced during this maintenance period. If for any reason the maintenance is extended or cancelled, we will advise you accordingly.

Please contact support@sinch.com should you require further information or assistance.
Posted on Sep 03, 2026 - 14:19 UTC

Sinch Internal Maintenance - BR1 Network Infrastructure Sep 17, 2026 08:00-10:00 UTC

Dear Client,

We are reaching out to inform you that a maintenance will be performed on our BR1 network infrastructure during the scheduled time window below.

Type: Network Maintenance
Affected Site: BR1

Maintenance Start Time: 2026-09-17 08:00 UTC
Maintenance End Time: 2026-09-17 10:00 UTC

Impact: Clients may experience brief delay in MT/MO traffic towards the following destinations.
Colombia

If for any reason the maintenance is extended or cancelled we will advise you accordingly.
Please contact support@sinch.com should you require further information or assistance.
Posted on Sep 03, 2026 - 17:36 UTC

Sinch Internal Maintenance - SG1 Network Infrastructure Sep 17, 2026 19:00-21:00 UTC

Dear Client,

We are reaching out to inform you that a maintenance will be performed on our SG1 network infrastructure during the scheduled time window below.

Type: Network Maintenance
Affected Site: SG1

Maintenance Start Time: 2026-09-17 19:00 UTC
Maintenance End Time: 2026-09-17 21:00 UTC

Impact: No expected impact.

If for any reason the maintenance is extended or cancelled we will advise you accordingly.
Please contact support@sinch.com should you require further information or assistance.
Posted on Sep 03, 2026 - 17:37 UTC

Message Manager - Planned maintenance to upgrade servers hosting the platform Sep 19, 2026 18:00-20:00 UTC

Dear Client,

We are reaching out to inform you that a planned maintenance activity is scheduled on 19th of Sep from 18:00 UTC to 20:00 UTC. Customers are advised not to schedule any campaigns during this maintenance window.

Maintenance Start Time: 2026-09-19 18:00 UTC
Maintenance End time: 2026-09-19 20:00 UTC

Impact: The Message Manager UI will be unavailable during the application upgrade.

If you experience any issues during this maintenance window, please contact the Operator Service NOC immediately at operatorservices.noc@sinch.com or +1 470-300-8394 (select "Support" from the menu, option 2 for Digital Interconnect, then option 1).

Please reference this maintenance notification when contacting support.

If you have any questions or concerns, please contact your Account Manager.
Posted on Sep 03, 2026 - 18:24 UTC

Service Announcement & Maintenance: New SMSC Site & Whitelisting Requirements - US Region Oct 1, 2026 07:00-08:00 UTC

As part of our commitment to platform reliability, security, and scalability, Sinch is adding a brand-new, high-efficiency site to our core SMSC billing and messaging routing engine product. This site expansion introduces a next-generation, high-performance architecture to significantly increase our regional capacity, improve overall platform stability, and ensure robust message processing.

New Regional Connection Endpoints that are planned to go live 2026-10-01 during the target window:

US SMPP: us6.smpp.api.sinch.com:
US HTTP SMS: us6.httpsms.api.sinch.com
US Lookup API: us6.httplookup.api.sinch.com

Type: Service Announcement & Maintenance
Maintenance start time: 2026-10-01 07:00 UTC
Maintenance end time: 2026-10-01 08:00 UTC

Action Required: Firewall Whitelisting

To ensure uninterrupted message delivery as we scale our traffic to include this new site we request that you update your firewall settings.

Affected API Endpoint:
(This change only affects customers connecting to either of the following US endpoints)

US SMPP: us1.smpp.api.sinch.com and/or us7.smpp.api.sinch.com
US HTTP SMS: us1.httpsms.api.sinch.com and/or us7.httpsms.api.sinch.com
US Lookup API: us1.httplookup.api.sinch.com and/or us7.httplookup.api.sinch.com

IP Addresses to Whitelist
Please coordinate with your network security team to whitelist these target IP addresses:

35.95.194.74
44.239.11.143
52.32.122.205

If for any reason the maintenance is extended, cancelled, or postponed, we will advise you accordingly.

Please contact support@sinch.com should you require further information or assistance.
Posted on Jul 10, 2026 - 08:37 UTC

Sep 4, 2026

Unresolved incidents: External Maintenance - United States - T-Mobile, Service Degradation - Conversation API WhatsApp - BR.

Sep 3, 2026

Campaigns Application Maintenance
Completed - The scheduled maintenance has been completed.
Sep 3, 14:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Sep 3, 13:30 UTC
Scheduled - Internal maintenance on whatsapp template selection
Sep 3, 13:12 UTC
External Maintenance - United States - T-Mobile
Completed - The scheduled maintenance has been completed.
Sep 3, 11:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Sep 3, 03:01 UTC
Scheduled - United States - T-Mobile has scheduled a maintenance.  

Impact SMS: Clients may experience delayed or failed Short Code and 10DLC MT/MO traffic towards T-Mobile US
Impact MMS: Clients may experience delayed or failed Short Code and 10DLC MT/MO traffic towards T-Mobile US

Maintenance Start Time: 2026-09-03 03:00 UTC
Maintenance End Time: 2026-09-03  11:00 UTC
Sep 1, 17:53 UTC
External Maintenance - United States - Toll Free number provider
Completed - The scheduled maintenance has been completed.
Sep 3, 05:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Sep 3, 03:00 UTC
Scheduled - We are writing to inform you that our Toll-Free Number Provider will be performing planned maintenance at the times specified below:

Impact: Intermittent delays for Toll-Free Numbers towards a subset of smaller networks in the US

Maintenance start time: 2026-09-03 03:00 UTC
Maintenance end time: 2026-09-03 05:00 UTC
Aug 31, 06:46 UTC

Sep 2, 2026

Sinch Internal Maintenance – Sinch SG1 Network Infrastructure
Completed - The scheduled maintenance has been completed.
Sep 2, 21:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Sep 2, 19:00 UTC
Update - Dear Client,

We are writing to inform you that the concerned maintenance activity has been postponed to the below mentioned timeframe.

Type: Sinch Internal Maintenance – Sinch SG1 Network Infrastructure
Previous Start Time: 2026-09-02 00:00 UTC
Previous End Time: 2026-09-02 02:00 UTC

New Start Time: 2026-09-02 19:00 UTC
New End Time: 2026-09-02 21:00 UTC

Potential service-impact duration: Approximately 5–10 minutes within the maintenance window.

We appreciate your patience and apologize for any inconvenience experienced during this maintenance period. If for any reason the maintenance is extended or cancelled, we will advise you accordingly.

Please contact support@sinch.com should you require further information or assistance.
Sep 1, 06:42 UTC
Scheduled - We are writing to inform you that as part of our continuous efforts to improve the performance and reliability of our platform, we will be performing a maintenance on our SG1 network infrastructure.

Maintenance Start Time: 2026-09-02 00:00 UTC
Maintenance End Time: 2026-09-02 02:00 UTC

Potential service-impact duration: Approximately 5–10 minutes within the maintenance window.
Aug 19, 20:51 UTC
Campaigns Application Maintenance
Completed - The scheduled maintenance has been completed.
Sep 2, 15:30 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Sep 2, 14:30 UTC
Scheduled - Campaigns Application Maintenance
Sep 2, 14:26 UTC
Sinch Incident - FaxAPI
Resolved - This incident has been resolved.

Incident Start Time: 2026-09-02 08:12 UTC
Incident End Time: 2026-09-02 13:55 UTC
Sep 2, 15:03 UTC
Investigating - We are currently experiencing intermittent api request timeouts on the Send fax endpoint. Engineering is engaged and reviewing.

Affected endpoint: fax.api.sinch.com

We appreciate your patience and apologize for any inconvenience.
Sep 2, 13:55 UTC
Sinch Scheduled Maintenance – US1 VPN Device
Completed - The scheduled maintenance has been completed.
Sep 2, 13:00 UTC
Update - Dear Client,
We're writing to inform you that the maintenance has been extended for an additional hour.

Start time: 2026-09-02 08:00 UTC
Previous End Time: 2026-09-02 12:00 UTC
New End Time: 2026-09-02 13:00 UTC

Please contact support@sinch.com should you require further information or assistance.
Sep 2, 11:59 UTC
Update - Dear Client,
We're writing to inform you that the maintenance has been extended for an additional hour.

Start time: 2026-09-02 08:00 UTC
Previous End Time: 2026-09-02 11:00 UTC
New End Time: 2026-09-02 12:00 UTC

Please contact support@sinch.com should you require further information or assistance.
Sep 2, 10:55 UTC
Update - We have observed additional unexpected impact for the following countries:

Spain

Please contact support@sinch.com should you require further information or assistance.
Sep 2, 09:04 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Sep 2, 08:00 UTC
Scheduled - Dear Client,

We will be performing planned network maintenance on the US1 Network Hub.

Impact: clients may experience intermittent delays or failures for MT and MO traffic to and from the following countries:

Bolivia
Brazil
Canada
Chile
Costa Rica
Guatemala
Paraguay
Peru
Puerto Rico
United States
Uruguay

Start time: 2026-09-02 08:00 UTC
End time: 2026-09-02 11:00 UTC

If for any reason the maintenance is extended or cancelled we will advise you accordingly.
Please contact support@sinch.com should you require further information or assistance.
Aug 17, 08:25 UTC
Sinch Engage - Bulk Messaging - Degradation
Resolved - This incident has been resolved.

Incident Start Time: 2026-09-02 09:45 UTC
Incident End Time: 2026-09-02 12:09 UTC
Sep 2, 12:19 UTC
Update - We are continuing to investigate this issue and will provide further updates as more information becomes available.
Sep 2, 11:41 UTC
Investigating - We are writing to inform you that we are experiencing a degradation impacting the bulk messaging service for Engage customers.

Impact: Customers may experience delayed messages via the bulk messaging service.

Incident Start Time: 2026-09-02 09:45 UTC

We are actively investigating and will provide further updates as more information becomes available.
Sep 2, 10:49 UTC
Delivery Issue Spain
Resolved - This incident has been resolved.

Incident Start Time: 2026-09-02 08:40 UTC
Incident End Time: 2026-09-02 10:35 UTC
Sep 2, 12:10 UTC
Investigating - We are currently observing delivery issues in Spain

Incident Start Time: 2026-09-02 08:40 UTC

Impact: Delayed MO's/Missing MO's

We will update as soon as we have more information.
If you have any questions, please contact support@sinch.com.
Sep 2, 10:21 UTC
External Maintenance - United States - T-Mobile.
Completed - The scheduled maintenance has been completed.
Sep 2, 11:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Sep 2, 03:00 UTC
Scheduled - United States - T-Mobile has scheduled a maintenance.

Impact SMS: Clients may experience delayed or failed Short Code and 10DLC MT/MO traffic towards T-Mobile US
Impact MMS: Clients may experience delayed or failed Short Code and 10DLC MT/MO traffic towards T-Mobile US

Maintenance Start Time: 2026-09-02 03:00 UTC
Maintenance End Time: 2026-09-02 11:00 UTC
Aug 31, 22:23 UTC
Campaigns Application Maintenance
Completed - The scheduled maintenance has been completed.
Sep 2, 10:01 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Sep 2, 09:00 UTC
Scheduled - Technical update on Whatsapp campaign creation flow
Sep 2, 08:42 UTC
Service notification - MCC and MNC added to the Verification Price list
Completed - The scheduled maintenance has been completed.
Sep 2, 10:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Sep 2, 08:01 UTC
Scheduled - Important Update: Format change in the price list for the Verification service.

We are updating the format of the Verification price list file generated from the Sinch Dashboard. Please review and update your local import routines or automated scripts to accommodate the two new columns before the effective date.

What is changing?
New columns: Mobile Country Code (MCC) and Mobile Network Code (MNC) are being added.
Location: These will be placed next to the existing Country column.

When is this happening?
Effective date: 2026-09-02

Please contact support@sinch.com should you require further information or assistance.
Aug 18, 15:34 UTC
Delivery Issue Canada - ICE Wireles
Resolved - This incident has been resolved.

Incident Start Time: 2026-08-20 02:44 UTC
Incident End Time: 2026-09-01 07:47 UTC
Sep 2, 03:56 UTC
Monitoring - A fix has been implemented and we are monitoring the results.
Sep 1, 08:43 UTC
Update - We are continuing to investigate this issue.
Aug 31, 23:05 UTC
Update - We are continuing to investigate this issue.
Aug 30, 22:08 UTC
Update - We are continuing to investigate this issue.
Aug 29, 21:05 UTC
Update - We are continuing to investigate this issue.
Aug 28, 20:32 UTC
Update - We are continuing to investigate this issue.
Aug 27, 20:28 UTC
Update - We are continuing to investigate this issue.
Aug 26, 20:25 UTC
Update - We are continuing to investigate this issue.
Aug 25, 20:22 UTC
Update - We are continuing to investigate this issue.
Aug 25, 12:11 UTC
Update - We are continuing to investigate this issue.
Aug 24, 11:21 UTC
Update - We are continuing to investigate this issue.
Aug 23, 09:12 UTC
Update - We are continuing to investigate this issue.
Aug 22, 08:05 UTC
Update - We are continuing to investigate this issue.
Aug 21, 07:48 UTC
Update - We are continuing to investigate this issue.
Aug 20, 20:05 UTC
Update - We are continuing to investigate this issue.
Aug 20, 11:57 UTC
Update - We are continuing to investigate this issue.
Aug 20, 08:31 UTC
Update - We are continuing to investigate this issue.
Aug 20, 06:50 UTC
Investigating - We are currently observing delivery issues in Canada - ICE Wireless.

Incident Start Time: 2026-08-20 02:44 UTC

Impact: Delayed MT's/Delayed MO's/Missing delivery receipts/Late delivery receipts

We will update as soon as we have more information.
If you have any questions, please contact support@sinch.com.
Aug 20, 05:28 UTC

Sep 1, 2026

Sinch Scheduled Maintenance - Norway - Telia
Completed - The scheduled maintenance has been completed.
Sep 1, 23:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Sep 1, 21:00 UTC
Scheduled - We will be performing a maintenance on our connections towards Norway - Telia.

Type: Scheduled Maintenance - Norway - Telia

Maintenance Start Time: 2026-09-01 21:00 UTC
Maintenance End Time: 2026-09-01 23:00 UTC

Impact MT: Clients may experience delayed or failed MT traffic for outbound messages sent to Norway - Telia.

Impact DR: Clients may experience delayed or failed delivery receipts for MT traffic sent to Norway - Telia.

We appreciate your patience and apologize for any inconvenience experienced during this maintenance period. If for any reason the maintenance is extended or cancelled, we will advise you accordingly.

Please contact support@sinch.com should you require further information or assistance.
Aug 13, 17:18 UTC
Sinch Maintenance - US Shortcode
Completed - The scheduled maintenance has been completed.
Sep 1, 10:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Sep 1, 09:00 UTC
Scheduled - Dear Client,

Sinch will be performing a scheduled maintenance on our US Shortcode Products.

As part of this update, clients may see a delays or failures during delivery from Shortcodes sending to US Devices.

Start Time: 2026-09-01 09:00 UTC
End Time: 2026-09-01 10:00 UTC

We appreciate your patience and apologize for any inconvenience experienced during this maintenance period. If for any reason the maintenance is extended or cancelled we will advise you accordingly.
Aug 13, 17:30 UTC

Aug 31, 2026

Campaigns Application Maintenance
Completed - The scheduled maintenance has been completed.
Aug 31, 15:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Aug 31, 14:15 UTC
Scheduled - Technical update on Whatsapp campaign creation flow
Aug 31, 14:10 UTC
Campaigns Application Maintenance
Completed - The scheduled maintenance has been completed.
Aug 31, 13:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Aug 31, 12:00 UTC
Scheduled - Technical update on Whatsapp campaign creation flow
Aug 31, 09:30 UTC
External Maintenance - T-Mobile United States
Completed - The scheduled maintenance has been completed.
Aug 31, 11:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Aug 31, 03:00 UTC
Scheduled - T-Mobile United States has scheduled a maintenance.

Impact SMS: Clients may experience delayed or failed Short Code and 10DLC MT/MO traffic towards T-Mobile US
Impact MMS: Clients may experience delayed or failed Short Code and 10DLC MT/MO traffic towards T-Mobile US

Maintenance Start Time: 2026-08-31 03:00 UTC
Maintenance End Time: 2026-08-31 11:00 UTC
Aug 27, 20:21 UTC
External Maintenance - AT&T - United States
Completed - The scheduled maintenance has been completed.
Aug 31, 09:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Aug 31, 08:00 UTC
Scheduled - AT&T - United States has scheduled a maintenance.

Impact MMS: No expected impact

Maintenance start time: 2026-08-31 08:00 UTC
Maintenance end time: 2026-08-31 09:00 UTC
Aug 26, 15:56 UTC

Aug 30, 2026

Aug 29, 2026

Delivery Issue Kuwait - Ooredoo
Resolved - This incident has been resolved.

Incident Start Time: 2026-08-28 19:18 UTC
Incident End Time: 2026-08-29 14:07 UTC
Aug 29, 16:31 UTC
Update - We are continuing to investigate this issue.
Aug 29, 04:05 UTC
Update - We are continuing to investigate this issue.
Aug 28, 23:05 UTC
Update - We are continuing to investigate this issue.
Aug 28, 20:53 UTC
Investigating - We are currently observing delivery issues in Kuwait - Ooredoo

Incident Start Time: 2026-08-28 19:18 UTC

Impact: Delayed MT's/Delayed MO's/Missing delivery receipts/Late delivery receipts

We will update as soon as we have more information.
If you have any questions, please contact support@sinch.com.
Aug 28, 19:39 UTC

Aug 28, 2026

Delivery Issue United Kingdom - Lycamobile
Resolved - This incident has been resolved.

Incident Start Time: 2026-08-28 19:40 UTC
Incident End Time: 2026-08-28 20:40 UTC
Aug 28, 21:37 UTC
Investigating - We are currently observing delivery issues in United Kingdom - Lycamobile

Incident Start Time: 2026-08-28 19:40 UTC

Impact: Delayed MT's/Delayed MO's/Missing delivery receipts/Late delivery receipts

We will update as soon as we have more information.
If you have any questions, please contact support@sinch.com.
Aug 28, 20:02 UTC
Delivery Issue Djibouti - Evatis
Resolved - This incident has been resolved.

Incident Start Time: 2026-08-27 20:50 UTC

Incident End Time: 2026-08-28 02:27 UTC
Aug 28, 02:49 UTC
Update - We are continuing to investigate this issue.
Aug 28, 01:43 UTC
Update - We are continuing to investigate this issue.
Aug 27, 23:10 UTC
Investigating - We are currently observing delivery issues in Djibouti - Evatis

Incident Start Time: 2026-08-27 20:50 UTC

Impact: Delayed MT's/Delayed MO's/Missing delivery receipts/Late delivery receipts

We will update as soon as we have more information.
If you have any questions, please contact support@sinch.com.
Aug 27, 21:41 UTC

Aug 27, 2026

Campaigns Application Maintenance
Completed - The scheduled maintenance has been completed.
Aug 27, 15:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Aug 27, 14:15 UTC
Scheduled - Campaigns Application Maintenance
Aug 27, 14:00 UTC
Sinch Emergency Maintenance - AU2
Completed - The scheduled maintenance has been completed.
Aug 27, 14:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Aug 27, 12:00 UTC
Scheduled - Dear Client,

We are reaching out to inform you that maintenance will be performed on our AU2 network infrastructure during the scheduled time window below.

Type: Network Maintenance
Affected Site: AU2

Maintenance start time: 2026-08-27 12:00 UTC
Maintenance end time: 2026-08-27 14:00 UTC

Impact: Customers may experience multiple brief connectivity issues during this maintenance when connecting to the endpoints listed below.

Impacted endpoints:
au1-2.smpp.api.sinch.com
au1-2.httpsms.api.sinch.com

To avoid connectivity issues, we recommend connecting to the below available endpoints during the maintenance window.

Available endpoints:
au1-1.smpp.api.sinch.com
au1-1.httpsms.api.sinch.com

If for any reason the maintenance is extended or cancelled we will advise you accordingly.
Please contact support@sinch.com should you require further information or assistance.
Aug 16, 05:12 UTC
Service Degradation - Customer Dashboard
Resolved - This incident has been resolved.

Incident start time: 2026-08-26 20:32 UTC
Incident end time: 2026-08-27 05:09 UTC
Aug 27, 11:05 UTC
Update - We are continuing to investigate this issue.
Aug 27, 07:05 UTC
Update - We are continuing to investigate this issue.
Aug 27, 03:04 UTC
Update - We are continuing to investigate this issue.
Aug 27, 00:12 UTC
Investigating - We are currently facing a service degradation on the customer dashboard, Dashboard.sinch.com.

Impact: Analytics is currently degraded in the US region.

Our engineering team is working to restore full functionality as soon as possible.

For any inquiries, please contact support@sinch.com.
Aug 26, 22:47 UTC
Technical maintenance on SFTP Connectors on production/fr
Completed - The scheduled maintenance has been completed.
Aug 27, 11:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Aug 27, 08:00 UTC
Scheduled - Technical maintenance.

We'll perform a switchover between our primary and secondary server.
No impact planned.

Maintenance start time: 2026-08-27 08:00 UTC
Maintenance end time: 2026-08-27 11:00 UTC
Aug 27, 08:00 UTC
DI SMS 365 (iSMS) | Operator Services | Database, Application Maintenance | PCR Number # PCRSDI-12346
Completed - The scheduled maintenance has been completed.
Aug 27, 10:31 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Aug 27, 05:30 UTC
Scheduled - Services: DI SMS 365 (iSMS)
PCR Number: PCRSDI-12346

Start Date and Time (GMT) :: 27th August 2026 5:30:00 Hrs.
End Date and Time (GMT) :: 27th August 2026 10:30:00 Hrs.

Impact
Mobile Terminating (MT) Traffic: No impact expected.
Mobile Originated (MO) Traffic: No impact expected.
DR Notification: No impact expected.
Report Manager Access: Not impacted
Report Manager Statistics: Not impacted

Description:
Sinch Digital Interconnect has scheduled a planned maintenance to carry out activities on the internal applications and systems; no impact is expected during this activity.

If you experience any issues during this maintenance, please contact the Operator Service NOC immediately at operatorservices.noc@sinch.com or +1 470.300.8394 (select ‘Support’ from the menu, option 2 for Digital Interconnect and then option 1) and reference this notification.
Aug 25, 21:56 UTC
Sinch Internal Maintenance - MMS
Completed - The scheduled maintenance has been completed.
Aug 27, 10:30 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Aug 27, 08:00 UTC
Scheduled - We are writing to inform you that as part of our continuous efforts to improve the performance and reliability of our platform, we will be performing a scheduled maintenance on MMS platform at the times specified below.

Type: Maintenance - MMS
Start Time: 2026-08-27 08:00 UTC
End Time: 2026-08-27 10:30 UTC

Impact MMS: MMS US, MMS AU, MMS CA. Customers may experience intermittent delays during the maintenance window due to queued messages. All queued messages will be processed after the upgrade.

We appreciate your patience and apologize for any inconvenience experienced during this maintenance period. If for any reason the maintenance is extended or cancelled, we will advise you accordingly.

Please contact support@sinch.com should you require further information or assistance.
Jul 30, 16:32 UTC
Sinch Maintenance - SSL Certificate Renewal
Completed - The scheduled maintenance has been completed.
Aug 27, 10:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Aug 27, 07:00 UTC
Scheduled - Sinch will be performing a scheduled maintenance to renew the SSL certificate's.

Type: Scheduled Maintenance
Maintenance: SSL Certificate Updates

Maintenance Start Time: 2026-08-27 07:00 UTC
Maintenance End Time: 2026-08-27 10:00 UTC

Impact:
us3.smpp.api.sinch.com
eu3.smpp.api.sinch.com
eu1.httpsms.api.sinch.com
eu3.httpsms.api.sinch.com
us.xml.api.sinch.com
eu.xml.api.sinch.com

We appreciate your patience and apologize for any inconvenience experienced during this maintenance period. If for any reason the maintenance is extended or cancelled we will advise you accordingly.

As part of this update, please note that the root certificates have also changed. We recommend updating the root certificates as well to ensure continued trust and smooth operation.

Download the certificate files for all the above mentioned certificates here:
https://clxgroup.sharepoint.com/:f:/s/CLX_Support_Anonymous_link/IgBt1caHWrPGTr1j2tT5Of8UAXz-VyLqFq2mkYrNIM7Ills
Aug 12, 12:57 UTC
Service Degradation - Verification - Okta integration
Resolved - This incident has been resolved.

Incident Start Time: 2026-08-27 00:20 UTC
Incident End Time: 2026-08-27 03:35 UTC
Aug 27, 04:48 UTC
Investigating - We are currently observing issues with our Verification services for clients using Okta integrations.

Incident Start Time: 2026-08-27 00:20 UTC
Impact: Clients will experience failed attempts when submitting verification requests via the Okta endpoint.

We sincerely apologize for any inconvenience this may cause and appreciate your understanding while we work to resolve the issue.

For further information or assistance, please contact us at support@sinch.com.
Aug 27, 02:54 UTC

Aug 26, 2026

Sinch Scheduled Maintenance - Norway - ice
Completed - The scheduled maintenance has been completed.
Aug 26, 23:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Aug 26, 21:00 UTC
Scheduled - We will be performing a maintenance on our connections towards Norway - ice at the times specified below.

Type: Scheduled Maintenance - Norway - ice
Start Time: 2026-08-26 21:00 UTC
End Time: 2026-08-26 23:00 UTC

Impact MT: Clients may experience delayed or failed MT traffic for outbound messages sent to Norway - ice.

Impact DR: Clients may experience delayed or failed delivery receipts for MT traffic sent to Norway - ice.

We appreciate your patience and apologize for any inconvenience experienced during this maintenance period. If for any reason the maintenance is extended or cancelled, we will advise you accordingly.

Please contact support@sinch.com should you require further information or assistance.
Aug 10, 08:39 UTC
Sinch Engage - WhatsApp Campaigns - Degradation
Resolved - This incident has been resolved.

Incident Start Time: 2026-08-26 12:10 UTC
Incident End Time: 2026-08-26 15:30 UTC
Aug 26, 16:26 UTC
Update - We are continuing to investigate this issue.
Aug 26, 16:06 UTC
Investigating - We are observing an intermittent issue affecting WhatsApp Campaigns.

Incident Start Time: 2026-08-26 12:10 UTC

Impact: Customers may be unable to select contacts when creating campaigns, or experience issues with campaigns being processed and sent.

Our teams are actively working to resolve the issue and will provide further updates as they become available.
Aug 26, 14:50 UTC
Campaigns Application Maintenance
Completed - The scheduled maintenance has been completed.
Aug 26, 13:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Aug 26, 12:00 UTC
Scheduled - Campaigns Application Maintenance
Aug 26, 10:59 UTC

Aug 25, 2026

Delivery Issue Germany - 1&1
Resolved - This incident has been resolved.

Incident Start Time: 2026-08-25 18:49 UTC
Incident End Time: 2026-08-25 21:27 UTC
Aug 25, 23:02 UTC
Update - We are continuing to investigate this issue.
Aug 25, 21:02 UTC
Investigating - We are currently observing delivery issues in Germany - 1&1.

Incident Start Time: 2026-08-25 18:49 UTC

Impact: Delayed MT's/Delayed MO's/Missing delivery receipts/Late delivery receipts

We will update as soon as we have more information.
If you have any questions, please contact support@sinch.com.
Aug 25, 19:30 UTC
External Maintenance - T-Mobile United States
Completed - The scheduled maintenance has been completed.
Aug 25, 09:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Aug 25, 02:00 UTC
Scheduled - T-Mobile USA has scheduled a maintenance.

Impact SMS: Clients may experience delayed or failed Short Code and 10DLC MT/MO traffic towards T-Mobile US

Impact MMS: Clients may experience delayed or failed Short Code and 10DLC MT/MO traffic towards T-Mobile US

Maintenance start time: 2026-08-25 02:00 UTC
Maintenance end time: 2026-08-25 09:00 UTC
Aug 24, 18:47 UTC
Services | Operator Services | Application, Network or System Maintenance | PCR Number #PCRSDI-12338
Completed - The scheduled maintenance has been completed.
Aug 25, 08:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Aug 25, 06:00 UTC
Scheduled - Services :: DI SMS 365
PCR Number :: PCRSDI-12338

Start Date and Time (GMT):: 8/25/2026 6:00
End Date and Time (GMT):: 8/25/2026 8:00

Impact
Mobile Terminating (MT) Traffic: No Impact
Mobile Originated (MO) Traffic: No Impact
DR Notification: No Impact
Report Manager Access : No Impact
Report Manager Statistics : No Impact
NRS API and Unified Platform API: Potential Impact

Description:
Sinch Digital Interconnect has scheduled a planned maintenance to carry out activities on the internal applications.

If you experience any issues during this maintenance , please contact the Operator Service NOC immediately at operatorservices.noc@sinch.com or +1 470.300.8394 (select ‘Support’ from the menu, option 2 for Digital Interconnect and then option 1) and reference this notification.
Aug 20, 14:24 UTC
External MMS Maintenance - US - AT&T
Completed - The scheduled maintenance has been completed.
Aug 25, 05:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Aug 25, 04:00 UTC
Scheduled - US - AT&T has scheduled a maintenance.
Impact: Intermittent MMS MT/MO delays.

Maintenance start time: 2026-08-25 04:00 UTC
Maintenance end time: 2026-08-25 05:00 UTC
Aug 19, 16:03 UTC

Aug 24, 2026

US1 & US7 - Site Degradation
Resolved - This incident has been resolved.

Incident Start Time: 2026-08-24 10:00 UTC
Incident Restoration Time: 2026-08-24 10:55 UTC
Incident End Time: 2026-08-24 12:25 UTC

Should you experience any issues establishing SMPP connections after the incident, kindly attempt to restart the binds/connections.
Aug 24, 13:08 UTC
Monitoring - Our engineers have identified the cause of the issue and have applied a fix.
We will continue to monitor the performance of the US sites.

Incident Restoration Time: 2026-08-24 10:55 UTC

If you have any questions, please contact support@sinch.com.
Aug 24, 11:05 UTC
Investigating - Dear Client,

We are currently experiencing a performance degradation on our US1 and US7 sites.

Incident Start Time: 2026-08-24 10:00 UTC

Our engineers are currently investigating and additional information will follow as it becomes available.

Affected Site: US1, US7, REST API US, Legacy APIs US

If you have any questions, please contact support@sinch.com.
Aug 24, 10:25 UTC

Aug 23, 2026

Aug 22, 2026

Delivery Issue Bulgaria - Vivacom
Resolved - This incident has been resolved.

Incident Start Time: 2026-08-22 14:11 UTC

Incident End Time: 2026-08-22 17:21 UTC
Aug 22, 18:22 UTC
Update - We are continuing to investigate this issue.
Aug 22, 16:16 UTC
Investigating - We are currently observing delivery issues in Bulgaria - Vivacom

Incident Start Time: 2026-08-22 14:11 UTC

Impact: Delayed MT's/Delayed MO's/Missing delivery receipts/Late delivery receipts

We will update as soon as we have more information.
Aug 22, 15:11 UTC
External Maintenance - T-Mobile United States
Completed - Dear Client,

We are writing to inform you that the previously scheduled maintenance has been cancelled.

A new notice will be sent when / if this maintenance is rescheduled.
If you have any questions, please contact support@sinch.com.
Aug 22, 04:48 UTC
Scheduled - T-Mobile USA has scheduled a maintenance.

Impact SMS: Clients may experience delayed or failed Short Code and 10DLC MT/MO traffic towards T-Mobile US

Impact MMS: Clients may experience delayed or failed Short Code and 10DLC MT/MO traffic towards T-Mobile US

Maintenance start time: 2026-08-25 03:00 UTC
Maintenance end time: 2026-08-25 11:00 UTC
Aug 21, 19:41 UTC

Aug 21, 2026

Delivery Issue Philippines - Globe Telecom
Resolved - This incident has been resolved.

Incident Start Time: 2026-08-21 07:02 UTC
Incident End Time: 2026-08-21 11:24 UTC
Aug 21, 12:31 UTC
Update - We are continuing to investigate this issue.
Aug 21, 10:03 UTC
Investigating - We are currently observing delivery issues in Philippines - Globe Telecom.

Incident Start Time: 2026-08-21 07:02 UTC

Impact: Delayed MT's/Delayed MO's/Missing delivery receipts/Late delivery receipts

We will update as soon as we have more information.
If you have any questions, please contact support@sinch.com
Aug 21, 08:06 UTC
Campaigns Application Maintenance
Completed - The scheduled maintenance has been completed.
Aug 21, 11:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Aug 21, 09:30 UTC
Scheduled - Campaigns Application Maintenance
Aug 21, 09:18 UTC
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