In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
May 12, 2026 - 03:00 UTC
Scheduled - T-Mobile US 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: 2026-05-12 03:00 UTC
Maintenance end time: 2026-05-12 11:00 UTC

May 12, 2026 03:00-11:00 UTC
Update - We are continuing to investigate this issue.
May 12, 2026 - 02:04 UTC
Update - We are continuing to investigate this issue.
May 11, 2026 - 21:51 UTC
Update - We are continuing to investigate this issue.
May 11, 2026 - 19:11 UTC
Investigating - We are currently observing delivery issues in Djibouti - Evatis

Incident Start Time: 2026-05-11 17:15 UTC.

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

We will update as soon as we have more information.

May 11, 2026 - 17:50 UTC
External Connectivity Degraded Performance
SMS - APAC Operational
SMS - EMEA Degraded Performance
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 Operational
Campaigns (France 🇫🇷) Operational
Campaigns API (France 🇫🇷) Operational
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
The Hub Operational
Rest API Operational
Webhooks Operational
SMPP Operational
Sinch Engage (Legacy) 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
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

Singapore Regulatory Compliance Maintenance - A2P SMS APIs - TLS 1.3 Requirement Apr 1, 2026 00:00-01:00 UTC

Update - The Infocomm Media Development Authority (IMDA) of Singapore has mandated the use of TLS (Transport Layer Security) 1.3 for all API connections handling A2P SMS traffic, effective April 1, 2026.

To ensure compliance and prevent any possible service disruption, all customers sending SMS traffic to Singapore must update their systems to support TLS 1.3 before this deadline.

Sinch Platform Readiness:
Our commitment is to provide a secure and resilient infrastructure.
We have already enabled full TLS 1.3 support across our global A2P SMSC infrastructure.
The final site, EU3 (IP 93.158.78.4) is now fully complaint to TLS 1.3 since March 17th, 2026.

Required Customer Action:
Verify Your Configuration: We strongly urge you to begin transitioning your systems to use TLS 1.3 for connections to Sinch immediately.

Compliance Deadline:
In accordance with IMDA requirements, connections using TLS 1.2 for traffic to Singapore should not be supported after April 1, 2026. To avoid any possible interruption of service to Singapore, you must complete your transition before this date.

Our team is ready to help ensure your transition is smooth and seamless.
Please do not hesitate to contact our customer support or account manager if you have any questions or require assistance.

Mar 18, 2026 - 08:49 UTC
Scheduled - The Infocomm Media Development Authority (IMDA) of Singapore has mandated the use of TLS (Transport Layer Security) 1.3 for all API connections handling A2P SMS traffic, effective April 1, 2026.

To ensure compliance and prevent any possible service disruption, all customers sending SMS traffic to Singapore must update their systems to support TLS 1.3 before this deadline.

Sinch Platform Readiness:
Our commitment is to provide a secure and resilient infrastructure.
We have already enabled full TLS 1.3 support across our global A2P SMSC infrastructure. The final site, EU3 (IP 93.158.78.4), will be fully compliant to TLS 1.3 by end of February 2026, well ahead of the deadline.

Required Customer Action:
Verify Your Configuration: We strongly urge you to begin transitioning your systems to use TLS 1.3 for connections to Sinch immediately.

Compliance Deadline:
In accordance with IMDA requirements, connections using TLS 1.2 for traffic to Singapore should not be supported after April 1, 2026. To avoid any possible interruption of service to Singapore, you must complete your transition before this date.

Our team is ready to help ensure your transition is smooth and seamless.
Please do not hesitate to contact our customer support or account manager if you have any questions or require assistance.

Nov 04, 2025 - 12:48 UTC

Sinch Scheduled Maintenance - Elastic SIP Trunking - minor updates May 12, 2026 13:00-14:00 UTC

Sinch Elastic SIP Trunking will be deploying a software update to improve performance, and add additional features and functionality. The scheduled work is not expected to impact services. This is being sent as a courtesy notice in the event that you experience issues with your service during the maintenance window.

For information about our product enhancements, we encourage you subscribe to our Elastic SIP Trunking Release Notes posted in the Sinch Community at: https://community.sinch.com/

Posted on May 05, 2026 - 05:19 UTC

External Maintenance - Vodafone Germany May 12, 2026 23:00 - May 13, 2026 04:00 UTC

Vodafone Germany has scheduled a maintenance.
Impact: Delivery may be impacted during this time frame.

Maintenance start time: 2026-05-12 23:00 UTC
Maintenance end time: 2026-05-13 04:00 UTC

Posted on May 11, 2026 - 10:58 UTC

External Maintenance - United States 10DLC Provider May 13, 2026 03:00-13:00 UTC

Our 10DLC Provider has scheduled a maintenance.
Impact: Delayed MT's/Delayed MO's/Missing delivery receipts/Late delivery receipts.

Maintenance start time: 2026-05-13 03:00 UTC
Maintenance end time: 2026-05-13 13:00 UTC

Posted on May 11, 2026 - 15:02 UTC

External Maintenance - Toll-Free Number Provider (US and CA) May 14, 2026 03:00-07:00 UTC

We are writing to inform you that our Toll-Free Number Provider (US and CA) will be performing planned maintenance at the times specified below:

Start Time: 2026-05-14 03:00 UTC
End Time: 2026-05-14 07:00 UTC

Impact SMS: Clients may experience delayed or failed Toll Free MT/MO traffic towards the United States and Canada.

Posted on Apr 14, 2026 - 10:01 UTC

Important Service Update: Action Required for Deactivation File Service May 14, 2026 15:00-16:00 UTC

Dear Client,

As part of our commitment to improving service performance and reliability, we are announcing an important update to our Deactivation File Service.

To ensure your service continues without interruption, it is essential that you update your systems to use the new endpoint before the change date.

Summary of Changes
We are decommissioning the FQDNs listed below and replacing them with a new, unified endpoint. This update also includes several enhancements to the service.

FQDN Status, FQDN, IP Address
To be Terminated, ftp01.sinch.com, N/A
To be Terminated, ftp01.clxnetworks.com, N/A
Replacement Endpoint, deact.prod.sinch.com, 184.169.203.194

Start Time

2026-05-14 15:00

Service Enhancements
The new endpoint introduces the following improvements:

Directory Structure: The Sprint directory has been removed, and a new Tier_2 directory has been added to house deactivation files from our tier 2 carrier connections.
File Naming Convention: The date in the file name will now reflect the day the service is run (e.g., deactivation_20250205.txt), rather than the previous day.
Expanded Data: Deactivation data from Verizon is now available through the new endpoint.

We recommend making these changes at your earliest convenience to ensure a seamless transition. Please let us know if you have any questions.

Posted on Apr 30, 2026 - 15:21 UTC

DI E-Mail 365 | Application Maintenance | PCR Number # PCRSDI-12203 May 17, 2026 02:00-05:00 UTC

Services :: DI E-Mail 365
PCR Number :: PCRSDI-12203

Start Date and Time (GMT):: 17th May 2026 02:00 UTC.
End Date and Time (GMT):: 17th May 2026 05:00 UTC.

Description:
AWS has recommended to upgrade java SDK for AWS to 2.x version from current 1.x .
In current batch , we are upgrading retarus-aa (10%) ,reterus-us-aa(10%) ,retarus-status(10%) ,rest
(10%)
All services will be up and running during this time and there will be NO downtime .

Impact:
No impact .


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.

Posted on May 05, 2026 - 14:17 UTC

External Maintenance - Toll-Free Number Provider (US and CA) May 19, 2026 04:00-08:00 UTC

We are writing to inform you that our Toll-Free Number Provider (US and CA) will be performing planned maintenance at the times specified below:

Start Time: 2026-05-19 04:00 UTC
End Time: 2026-05-19 08:00 UTC

Impact MMS: Clients may experience delayed or failed Toll Free MT/MO traffic towards the United States.

Posted on May 12, 2026 - 04:32 UTC

Sinch Scheduled Maintenance - Elastic SIP Trunking (US) and Voice API (all regions except EU) May 19, 2026 12:00-13:00 UTC

Sinch Elastic SIP Trunking will be undergoing maintenance to update our SBCs [Session Border Controller] and routing servers for added SIP capabilities - the scheduled work is not expected to impact services. This is being sent as a courtesy notice in the event that you experience issues with your service 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 for further information.

Posted on May 11, 2026 - 23:53 UTC

Sinch Scheduled Maintenance - Voice API (EU regions) May 19, 2026 19:00-20:00 UTC

Sinch Voice API will be undergoing maintenance to update our SBCs [Session Border Controller] and routing servers for added SIP capabilities - the scheduled work is not expected to impact services. This is being sent as a courtesy notice in the event that you experience issues with your service 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 for further information.

Posted on May 12, 2026 - 00:04 UTC

External Maintenance - Toll-Free Number Provider (US and CA) May 21, 2026 03:00-07:00 UTC

We are writing to inform you that our Toll-Free Number Provider (US and CA) will be performing planned maintenance at the times specified below:

Start Time: 2026-05-21 03:00 UTC
End Time: 2026-05-21 07:00 UTC

Impact SMS: Clients may experience delayed or failed Toll Free MT/MO traffic towards the United States and Canada.

Posted on Apr 14, 2026 - 09:54 UTC

External Maintenance - Toll-Free Number Provider (US and CA) May 28, 2026 03:00-07:00 UTC

We are writing to inform you that our Toll-Free Number Provider (US and CA) will be performing planned maintenance at the times specified below:

Start Time: 2026-05-28 03:00 UTC
End Time: 2026-05-28 07:00 UTC

Impact SMS: Clients may experience delayed or failed Toll Free MT/MO traffic towards the United States and Canada.

Posted on Apr 14, 2026 - 10:07 UTC
May 12, 2026
Resolved - This incident has been resolved.

Incident Start Time: 2026-05-11 23:49 UTC.
Incident End Time: 2026-05-12 04:13 UTC.

May 12, 05:02 UTC
Monitoring - Traffic has been restored and we are monitoring until it stabilizes.
May 12, 03:14 UTC
Investigating - We are currently observing delivery issues in Germany - Vodafone
Incident Start Time: 2026-05-11 23:49 UTC.

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

We will update as soon as we have more information.

May 12, 01:56 UTC
Completed - The scheduled maintenance has been completed.
May 12, 05:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
May 12, 02:00 UTC
Scheduled - Services: DI SMS 365 (iSMS)
PCR Number: PCRSDI-12221

Start Date and Time (GMT) :: 12th May 2026 2:00 Hrs.
End Date and Time (GMT) :: 12th May 2026 5:00 Hrs.

Impact
Mobile Terminating (MT) Traffic: Potential latency
Mobile Originated (MO) Traffic: Potential latency
DR Notification: Potential latency

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.

May 8, 00:25 UTC
May 11, 2026
Completed - The scheduled maintenance has been completed.
May 11, 14:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
May 11, 11:30 UTC
Scheduled - Scheduled
Services :: DI SMS 365 (SMSX)
PCR Number :: PCRSDI-12224

Start Date and Time (GMT):: 11th May 2026 11:30 Hrs.
End Date and Time (GMT):: 11th May 2026 14:00 Hrs.

Impact:
Mobile Terminating (MT) Traffic : No Impact
Mobile Originated (MO) Traffic : No Impact
DR Notification : No Impact

Description:
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.

May 7, 21:53 UTC
Completed - The scheduled maintenance has been completed.
May 11, 11:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
May 11, 03:00 UTC
Scheduled - T-Mobile US 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: 2026-05-11 03:00 UTC
Maintenance end time: 2026-05-11 11:00 UTC

May 8, 03:07 UTC
May 10, 2026

No incidents reported.

May 9, 2026

No incidents reported.

May 8, 2026
Resolved - This incident has been resolved.
May 8, 13:04 UTC
Investigating - Ticket Number :: MNOC-64100
Services:: DI SMS 365 (iSMS)

Description ::
Our internal monitoring has alerted to an incident. Few of our customers may observe delays in delivery for MO, MT and DR messages. Our support team is currently working on high priority to resolve this issue. Monitoring NOC will continue to follow-up and update you on the progress made.

Impact ::
Mobile Terminating (MT) Traffic: Potential Delay in delivery
Mobile Originated (MO) Traffic: Potential Delay in delivery
DR Notification : Potential Delay in delivery
Report Manager Access : Not Impacted
Report Manager Statistics : Not Impacted

Incident Start Date & Time (GMT) : May 07 12:59:17 UTC 2026
If you have any questions, 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.

May 7, 13:12 UTC
Completed - The scheduled maintenance has been completed.
May 8, 13:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
May 8, 04:00 UTC
Scheduled - T-Mobile USA has scheduled a maintenance.

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

Maintenance Start time: 2026-05-08 04:00 UTC
Maintenance End time: 2026-05-08 13:00 UTC

May 6, 00:58 UTC
May 7, 2026
Resolved - This incident has been resolved.

Estimated Incident Start Time: 2026-05-06 14:00 UTC
Incident End Time: 2026-05-07 21:50 UTC

May 7, 22:39 UTC
Monitoring - A fix has been implemented and we are monitoring the results.
May 7, 21:52 UTC
Update - We are continuing to investigate this issue.
May 7, 19:04 UTC
Investigating - We are currently observing delivery issues towards United States - AT&T

Estimated Incident Start Time: 2026-05-06 14:00 UTC

Impact: Delayed delivery for concatenated 10DLC MT messages submitted towards AT&T US.

We will update as soon as we have more information.
If you have any questions, please contact support@sinch.com.

May 7, 16:58 UTC
Completed - The scheduled maintenance has been completed.
May 7, 16:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
May 7, 12:30 UTC
Scheduled - Services :: DI SMS 365 (SMSX)
PCR Number :: PCRSDI-12214

Start Date and Time (GMT):: 07th May 2026 12:30 Hrs.
End Date and Time (GMT):: 07th May 2026 16:00 Hrs.

Impact:
Mobile Terminating (MT) Traffic : No Impact
Mobile Originated (MO) Traffic : No Impact
DR Notification : No Impact

Description:
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.

May 7, 00:20 UTC
Completed - The scheduled maintenance has been completed.
May 7, 12:30 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
May 7, 12:00 UTC
Scheduled - Creating a campaign on an external channel now requires a landing page. This change ensures campaigns are properly configured and deliver value. Attempts to create an external campaign without a landing page will no longer be accepted by the UI and the APIs.
May 7, 08:13 UTC
Completed - The scheduled maintenance has been completed.
May 7, 07:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
May 7, 03:00 UTC
Scheduled - We are writing to inform you that our Toll-Free Number Provider (US and CA) will be performing planned maintenance at the times specified below:

Start Time: 2026-05-07 03:00 UTC
End Time: 2026-05-07 07:00 UTC

Impact SMS: Clients may experience delayed or failed Toll Free MT/MO traffic towards the United States and Canada.

Apr 14, 09:42 UTC
Completed - The scheduled maintenance has been completed.
May 7, 05:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
May 7, 02:00 UTC
Scheduled - Dear Client,

We will be performing a schedule network maintenance at our UK5 Network hub.

Type: Schedule Network Maintenance
Affected site: UK5 Network hub
Impact: Impact: Clients may experience intermittent delayed/failed MT and MO traffic to and from the following countries.

France
United Kingdom
Germany
Russia
Italy
Netherlands
French’s overseas territory
Ireland
Hong Kong

Start time: 2026-05-07 02:00 UTC
End time: 2026-05-07 05:00 UTC

If for any reason the maintenance period is extended or cancelled we will advise you accordingly.
And of course if you have any concerns please contact support@sinch.com.
Please accept our apologies for the inconvenience.

Best Regards,
The Sinch Team

Apr 17, 12:00 UTC
May 6, 2026
Resolved - This incident has been resolved.
May 6, 18:20 UTC
Monitoring - A fix has been implemented and we are monitoring the results.
May 6, 10:09 UTC
Investigating - Ticket Number :: MNOC-64082
Services:: DI SMS 365 (iSMS)

Description ::
Our internal monitoring has alerted to an incident. Few of our customers may observe delays in delivery for MO, MT and DR messages. Our support team is currently working on high priority to resolve this issue. Monitoring NOC will continue to follow-up and update you on the progress made.

Impact ::
Mobile Terminating (MT) Traffic: Potential Delay in delivery
Mobile Originated (MO) Traffic: Potential Delay in delivery
DR Notification : Potential Delay in delivery
Report Manager Access : Not Impacted
Report Manager Statistics : Not Impacted

Incident Start Date & Time (GMT) : May 06 09:20:47 UTC 2026
If you have any questions, 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.

May 6, 09:36 UTC
Resolved - This incident has been resolved.

Incident Start Time: 2026-05-05 07:00 UTC
Incident End Time: 2026-05-06 16:16 UTC

May 6, 17:17 UTC
Monitoring - A fix has been implemented and we are monitoring the results.
May 6, 16:22 UTC
Investigating - We are currently experiencing an issue with our Conversation and REST APIs.

Incident Start Time: 2026-05-05 07:00 UTC

Impact: A subset of Delivery Receipts for concatenated messages will receive an unknown state if submitted via the Conversation or REST APIs.

We will provide ongoing updates on this page. For any inquiries, please contact us at support@sinch.com.

May 6, 14:33 UTC
Resolved - This incident has been resolved.

Incident Start Time: 2026-05-06 09:20 UTC
Incident End Time: 2026-05-06 11:26 UTC

May 6, 12:15 UTC
Investigating - We are currently observing delivery issues in Guatemala - Tigo

Incident Start Time: 2026-05-06 09:20 UTC

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

We will update as soon as we have more information.

May 6, 10:57 UTC
Completed - The scheduled maintenance has been completed.
May 6, 11:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
May 6, 03:00 UTC
Scheduled - T-Mobile USA has scheduled a maintenance.

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

Maintenance start time: 2026-05-06 03:00 UTC
Maintenance End time: 2026-05-06 11:00 UTC

May 1, 18:54 UTC
Completed - The scheduled maintenance has been completed.
May 6, 10:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
May 6, 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: 2026-05-06 08:00 UTC
End Time: 2026-05-06 10:00 UTC

Impact MMS: MMS US, MMS AU, MMS CA. 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.

Apr 16, 14:30 UTC
Resolved - This incident has been resolved.

Incident Start Time: 2026-05-05 22:20 UTC
Incident End Time: 2026-05-06 00:43 UTC

May 6, 00:48 UTC
Investigating - We are currently observing delivery issues in Guatemala - Tigo

Incident Start Time: 2026-05-05 22:20 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.

May 5, 22:42 UTC
May 5, 2026
Resolved - We experienced an issue affecting outbound traffic towards Finland, where a filtering configuration caused a subset of traffic to be incorrectly overwritten and routed using another sender ID.

The issue was identified and rectified, and services are now operating normally.

Incident Start Time: 2026-05-05 19:00 UTC
Incident End Time: 2026-05-06 14:00 UTC

If you have any questions, please contact support@sinch.com.

May 5, 19:00 UTC
Completed - The scheduled maintenance has been completed.
May 5, 14:01 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
May 5, 12:00 UTC
Scheduled - Sinch Elastic SIP Trunking will be undergoing maintenance to update our SBCs [Session Border Controller] and routing servers for added SIP capabilities and improved monitoring - the scheduled work is not expected to impact services. This is being sent as a courtesy notice in the event that you experience issues with your service 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 for further information.

Apr 30, 13:21 UTC
Completed - The scheduled maintenance has been completed.
May 5, 14:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
May 5, 12:30 UTC
Scheduled - Application maintenance
May 5, 12:26 UTC
Completed - The scheduled maintenance has been completed.
May 5, 11:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
May 5, 03:00 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: 2026-05-05 03:00 UTC
Maintenance end time: 2026-05-05 11:00 UTC

May 1, 03:32 UTC
Resolved - This incident has been resolved.

Incident Start Time: 2026-05-05 07:30 UTC
Incident End Time: 2026-05-05 09:50 UTC

May 5, 10:03 UTC
Investigating - We are currently observing delivery issues in Finland - Elisa and Telia.

Incident Start Time: 2026-05-05 07:30 UTC

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

We will update as soon as we have more information.

May 5, 08:07 UTC
Resolved - This incident has been resolved.

Incident Start Time: 2026-05-05 00:09 UTC
Incident End Time: 2026-05-05 01:01 UTC

May 5, 02:11 UTC
Investigating - We are currently observing delivery issues in Mexico - AT&T.

Incident Start Time: 2026-05-05 00:09 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.

May 5, 00:37 UTC
May 4, 2026
Completed - The scheduled maintenance has been completed.
May 4, 12:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
May 4, 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: 2026-05-04 02:00 UTC
Maintenance end time: 2026-05-04 12:00  UTC

May 4, 02:00 UTC
Resolved - This issue has been resolved.

Incident Start Time: 2026-05-04 01:32 UTC
Incident End Time: 2026-05-04 06:01 UTC

May 4, 06:11 UTC
Update - We are continuing to investigate this issue.
May 4, 03:37 UTC
Investigating - We are currently observing delivery issues in Guatemala - Tigo

Incident Start Time: 2026-05-04 01:32 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.

May 4, 02:06 UTC
May 3, 2026
Completed - The scheduled maintenance has been completed.
May 3, 04:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
May 3, 02:00 UTC
Scheduled - Services :: DI E-Mail 365
PCR Number :: PCRSDI-12190

Start Date and Time (GMT):: 3rd May 2026 02:00 UTC.
End Date and Time (GMT):: 3rd May 2026 04:00 UTC.

Description:
AWS has recommended to upgrade java SDK for AWS to 2.x version from current 1.x .
In current batch , we are upgrading email-unsubscribe,email-scheduler , email-rest (10%)
All services will be up and running during this time and there will be NO downtime .

Impact:
No impact .

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.

Apr 21, 15:56 UTC
May 2, 2026
Resolved - This issue has been resolved.

Incident Start Date & Time (GMT) :2nd May 2026 09:54 GMT
Incident End Date & Time (GMT) : 2nd May 2026 10:39 GMT

May 2, 12:44 UTC
Investigating - Ticket Number :: MNOC-64038
Services:: DI SMS 365 (iSMS)

Description ::
Our internal monitoring has alerted to an incident. Few of our customers may observe delays in delivery for MO, MT and DR messages. Our support team is currently working on high priority to resolve this issue. Monitoring NOC will continue to follow-up and update you on the progress made.

Impact ::
Mobile Terminating (MT) Traffic: Potential Delay in delivery
Mobile Originated (MO) Traffic: Potential Delay in delivery
DR Notification : Potential Delay in delivery
Report Manager Access : Not Impacted
Report Manager Statistics : Not Impacted

Incident Start Date & Time (GMT) : 2026-05-02 09:54 GMT

If you have any questions, 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.

May 2, 10:38 UTC
May 1, 2026
Completed - The scheduled maintenance has been completed.
May 1, 12:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
May 1, 02:00 UTC
Scheduled - T-Mobile US 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: 2026-05-01 02:00 UTC
Maintenance end time: 2026-05-01 12:00 UTC

Apr 28, 01:55 UTC
Resolved - This incident has been resolved.

Incident Start Time: 2026-04-29 19:35 UTC
Incident End Time: 2026-05-01 01:30 UTC

May 1, 05:38 UTC
Update - We are continuing to investigate this issue.
Apr 30, 21:41 UTC
Update - We are continuing to investigate this issue.
Apr 30, 18:48 UTC
Investigating - We are currently observing delivery issues in US - AT&T

Incident Start Time: 2026-04-29 19:35 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.

Apr 30, 17:18 UTC
Apr 30, 2026
Completed - The scheduled maintenance has been completed.
Apr 30, 14:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Apr 30, 12:00 UTC
Scheduled - Sinch Elastic SIP Trunking will be undergoing maintenance to optimize the servers during peak traffic times - the scheduled work may result in brief interruptions with your service. This is being sent as a courtesy notice in the event that you experience issues that extend beyond 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 for further information.

Apr 20, 13:44 UTC
Completed - The scheduled maintenance has been completed.
Apr 30, 12:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Apr 30, 02:00 UTC
Scheduled - T-Mobile US 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: 2026-04-30 02:00 UTC
Maintenance end time: 2026-04-30 12:00 UTC

Apr 28, 01:58 UTC
Resolved - This incident has been resolved.

Incident Start Time: 2026-04-29 22:58 UTC
Incident Start End: 2026-04-30 05:11 UTC

Apr 30, 08:11 UTC
Update - We are continuing to investigate this issue.
Apr 30, 04:42 UTC
Investigating - We are currently observing delivery issues in Reunion - Orange

Incident Start Time: 2026-04-29 22:58 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.

Apr 30, 03:34 UTC
Apr 29, 2026
Resolved - This incident has been resolved.

Incident Start Time: 2026-04-29 02:52 UTC
Incident End Time: 2026-04-29 16:50 UTC

Apr 29, 20:34 UTC
Update - We are continuing to investigate this issue.
Apr 29, 12:08 UTC
Update - We are continuing to investigate this issue.
Apr 29, 07:56 UTC
Update - We are continuing to investigate this issue.
Apr 29, 05:54 UTC
Investigating - We are currently observing delivery issues in Costa Rica - Telefonica.

Incident Start Time: 2026-04-29 02:52 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.

Apr 29, 04:29 UTC
Completed - The scheduled maintenance has been completed.
Apr 29, 12:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Apr 29, 03:00 UTC
Scheduled - T-Mobile US 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: 2026-04-29 03:00 UTC
Maintenance end time: 2026-04-29 12:00 UTC

Apr 25, 14:23 UTC
Apr 28, 2026
Completed - The scheduled maintenance has been completed.
Apr 28, 12:30 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Apr 28, 12:00 UTC
Scheduled - Sinch Elastic SIP Trunking will be deploying an update to add additional features and functionality for internal CDR correlation. The scheduled work is not expected to impact services. This is being sent as a courtesy notice in the event that you experience issues with your service during the maintenance window.

For information about our product enhancements, we encourage you subscribe to our Elastic SIP Trunking Release Notes posted in the Sinch Community at: https://community.sinch.com/

Apr 15, 00:23 UTC
Completed - The scheduled maintenance has been completed.
Apr 28, 10:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Apr 28, 08:30 UTC
Scheduled - Internal improvements
Apr 28, 08:16 UTC