Update - We are continuing to investigate this issue.
Feb 22, 2026 - 13:42 UTC
Feb 22, 2026 - 13:42 UTC
Update - We are continuing to investigate this issue.
Feb 22, 2026 - 09:05 UTC
Feb 22, 2026 - 09:05 UTC
Update - We are continuing to investigate this issue.
Feb 22, 2026 - 06:07 UTC
Feb 22, 2026 - 06:07 UTC
Investigating - We are currently observing delivery issues in Paraguay - Tigo.
Incident Start Time: 2026-02-22 04:00 UTC
Impact: Delayed MT's/Delayed MO's/Missing delivery receipts/Late delivery receipts
We will update as soon as we have more information.
Feb 22, 2026 - 04:34 UTC
Incident Start Time: 2026-02-22 04:00 UTC
Impact: Delayed MT's/Delayed MO's/Missing delivery receipts/Late delivery receipts
We will update as soon as we have more information.
Feb 22, 2026 - 04:34 UTC
External Connectivity
Degraded Performance
SMS - APAC
Operational
SMS - EMEA
Operational
SMS - LATAM
Degraded Performance
SMS - CA - ShortCode
Operational
SMS - CA - Toll Free
Operational
SMS - US - ShortCode
Operational
SMS - US - Toll Free
Operational
SMS - US - 10DLC
Operational
MMS - US
Operational
MMS - US - Toll Free
Operational
MMS - US - 10DLC
Operational
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
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
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 (Beta)
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
External Maintenance - T-Mobile United States Feb 24, 2026 04:00-12:00 UTC
T-Mobile United States has scheduled a maintenance.
Impact MMS: Clients may experience delayed or failed Short Code and 10DLC MT/MO traffic towards the United States
Maintenance start time: 2026-02-24 04:00 UTC
Maintenance end time: 2026-02-24 12:00 UTC
Posted on Feb 20, 2026 - 22:42 UTC
Impact MMS: Clients may experience delayed or failed Short Code and 10DLC MT/MO traffic towards the United States
Maintenance start time: 2026-02-24 04:00 UTC
Maintenance end time: 2026-02-24 12:00 UTC
Posted on Feb 20, 2026 - 22:42 UTC
External Maintenance - Singapore - M1 Feb 24, 2026 18:00-21:00 UTC
Maintenance start time: 2026-02-24 18:00 UTC
Maintenance end time: 2026-02-24 21:00 UTC
Impact: Delayed MT's/Delayed MO's/Missing delivery receipts/Late delivery receipts.
Posted on Feb 11, 2026 - 15:25 UTC
Maintenance end time: 2026-02-24 21:00 UTC
Impact: Delayed MT's/Delayed MO's/Missing delivery receipts/Late delivery receipts.
Posted on Feb 11, 2026 - 15:25 UTC
Sinch Maintenance - SSL Certificate Renewal Feb 25, 2026 09:00-12:00 UTC
Update -
Sinch will be performing a scheduled maintenance to renew the SSL certificate for the Certificate's
*.sms.api.sinch.com
*.sms.sdi.sinch.com
Type: Scheduled Maintenance
Maintenance: SSL Certificate Updates
Start Time: 2026-02-25 09:00 UTC
End Time: 2026-02-25 12:00 UTC
Impact: *.sms.api.sinch.com, *.sms.sdi.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/IgD5MQyLGkF0QLRODzh4_6i6AU3W4iuAUHxs-eM89-gMS1c?e=szk5rG
Jan 27, 2026 - 12:12 UTC
*.sms.api.sinch.com
*.sms.sdi.sinch.com
Type: Scheduled Maintenance
Maintenance: SSL Certificate Updates
Start Time: 2026-02-25 09:00 UTC
End Time: 2026-02-25 12:00 UTC
Impact: *.sms.api.sinch.com, *.sms.sdi.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/IgD5MQyLGkF0QLRODzh4_6i6AU3W4iuAUHxs-eM89-gMS1c?e=szk5rG
Jan 27, 2026 - 12:12 UTC
Update -
We will be undergoing scheduled maintenance during this time.
Jan 27, 2026 - 12:11 UTC
Jan 27, 2026 - 12:11 UTC
Update -
Sinch will be performing a scheduled maintenance to renew the SSL certificate for the Certificate's
*.sms.api.sinch.com
*.sms.sdi.sinch.com
Type: Scheduled Maintenance
Maintenance: SSL Certificate Updates
Start Time: 2026-02-25 09:00 UTC
End Time: 2026-02-25 12:00 UTC
Impact: *.sms.api.sinch.com, *.sms.sdi.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/IgD5MQyLGkF0QLRODzh4_6i6AU3W4iuAUHxs-eM89-gMS1c?e=szk5rG
Jan 25, 2026 - 09:00 UTC
*.sms.api.sinch.com
*.sms.sdi.sinch.com
Type: Scheduled Maintenance
Maintenance: SSL Certificate Updates
Start Time: 2026-02-25 09:00 UTC
End Time: 2026-02-25 12:00 UTC
Impact: *.sms.api.sinch.com, *.sms.sdi.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/IgD5MQyLGkF0QLRODzh4_6i6AU3W4iuAUHxs-eM89-gMS1c?e=szk5rG
Jan 25, 2026 - 09:00 UTC
Scheduled -
Sinch will be performing a scheduled maintenance to renew the SSL certificate for the Certificate's
*.sms.api.sinch.com
*.sms.sdi.sinch.com
Type: Scheduled Maintenance
Maintenance: SSL Certificate Updates
Start Time: 2026-02-19 09:00 UTC
End Time: 2026-02-19 12:00 UTC
Impact: *.sms.api.sinch.com, *.sms.sdi.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/sites/CLX_Support_Anonymous_link/Shared%20Documents/Forms/AllItems.aspx?id=%2Fsites%2FCLX%5FSupport%5FAnonymous%5Flink%2FShared%20Documents%2FTOR%2D4439&p=true&ga=1
Jan 24, 2026 - 10:18 UTC
*.sms.api.sinch.com
*.sms.sdi.sinch.com
Type: Scheduled Maintenance
Maintenance: SSL Certificate Updates
Start Time: 2026-02-19 09:00 UTC
End Time: 2026-02-19 12:00 UTC
Impact: *.sms.api.sinch.com, *.sms.sdi.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/sites/CLX_Support_Anonymous_link/Shared%20Documents/Forms/AllItems.aspx?id=%2Fsites%2FCLX%5FSupport%5FAnonymous%5Flink%2FShared%20Documents%2FTOR%2D4439&p=true&ga=1
Jan 24, 2026 - 10:18 UTC
Planned Security Maintenance - EU3 Feb 26, 2026 01:00-03:00 UTC
We will perform a planned maintenance to strengthen security on our EU3 Site during the below window.
Type: Planned Maintenance
Start Time: 2026-02-26 01:00
End Time: 2026-02-26 03:00
Impact: Customers who connect to the below specified endpoints and ports will experience a brief connectivity issue for 10-30 seconds during the window.
Impacted endpoints:
eu3.smpp.api.sinch.com / Port: 3601
eu3.httplookup.api.sinch.com / Port: 3701
eu3.httpsms.api.sinch.com / Port: 3801
We recommend connecting to the below endpoints and ports during the duration of this maintenance.
Corresponding endpoints and ports are available:
eu1.smpp.api.sinch.com / Port: 3601
eu1.httplookup.api.sinch.com / Port: 3701
eu1.httpsms.api.sinch.com / Port: 3801
We appreciate your patience while work is being done. If you have any questions or concerns please reach out to support@sinch.com
Posted on Feb 12, 2026 - 15:47 UTC
Type: Planned Maintenance
Start Time: 2026-02-26 01:00
End Time: 2026-02-26 03:00
Impact: Customers who connect to the below specified endpoints and ports will experience a brief connectivity issue for 10-30 seconds during the window.
Impacted endpoints:
eu3.smpp.api.sinch.com / Port: 3601
eu3.httplookup.api.sinch.com / Port: 3701
eu3.httpsms.api.sinch.com / Port: 3801
We recommend connecting to the below endpoints and ports during the duration of this maintenance.
Corresponding endpoints and ports are available:
eu1.smpp.api.sinch.com / Port: 3601
eu1.httplookup.api.sinch.com / Port: 3701
eu1.httpsms.api.sinch.com / Port: 3801
We appreciate your patience while work is being done. If you have any questions or concerns please reach out to support@sinch.com
Posted on Feb 12, 2026 - 15:47 UTC
External Maintenance - Toll-Free Number Provider Feb 26, 2026 04:00-08:00 UTC
Our Toll-Free number provider has scheduled a maintenance.
Impact SMS: Clients may experience delayed or failed Toll Free MT/MO traffic towards the United States and Canada.
Impact MMS: Clients may experience delayed or failed Toll Free MT/MO traffic towards the United States.
Maintenance start time: 2026-02-26 04:00 UTC
Maintenance end time: 2026-02-26 08:00 UTC
Posted on Jan 09, 2026 - 20:41 UTC
Impact SMS: Clients may experience delayed or failed Toll Free MT/MO traffic towards the United States and Canada.
Impact MMS: Clients may experience delayed or failed Toll Free MT/MO traffic towards the United States.
Maintenance start time: 2026-02-26 04:00 UTC
Maintenance end time: 2026-02-26 08:00 UTC
Posted on Jan 09, 2026 - 20:41 UTC
External Maintenance - SMS & MMS Feb 27, 2026 05:00-11:00 UTC
Update -
We are writing to inform you that the concerned maintenance activity has been postponed to the below mentioned timeframe.
Previous Start Time: 2026-02-23 05:00 UTC
Previous End Time: 2026-02-23 11:00 UTC
New Start Time: 2026-02-27 05:00 UTC
New End Time: 2026-02-27 11:00 UTC
Impact SMS: Clients may experience delayed or failed 10DLC MT/MO traffic towards the United States and Canada
Impact MMS: Clients may experience delayed or failed 10DLC MT/MO traffic towards the United States
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.
Jan 26, 2026 - 12:45 UTC
Previous Start Time: 2026-02-23 05:00 UTC
Previous End Time: 2026-02-23 11:00 UTC
New Start Time: 2026-02-27 05:00 UTC
New End Time: 2026-02-27 11:00 UTC
Impact SMS: Clients may experience delayed or failed 10DLC MT/MO traffic towards the United States and Canada
Impact MMS: Clients may experience delayed or failed 10DLC MT/MO traffic towards the United States
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.
Jan 26, 2026 - 12:45 UTC
Scheduled -
An external supplier has scheduled a maintenance.
Impact SMS: Clients may experience delayed or failed 10DLC MT/MO traffic towards the United States and Canada
Impact MMS: Clients may experience delayed or failed 10DLC MT/MO traffic towards the United States
Maintenance Start Time: 2026-02-23 05:00 UTC
Maintenance End Time: 2026-02-23 11:00 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.
Jan 20, 2026 - 15:39 UTC
Impact SMS: Clients may experience delayed or failed 10DLC MT/MO traffic towards the United States and Canada
Impact MMS: Clients may experience delayed or failed 10DLC MT/MO traffic towards the United States
Maintenance Start Time: 2026-02-23 05:00 UTC
Maintenance End Time: 2026-02-23 11:00 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.
Jan 20, 2026 - 15:39 UTC
DI E-Mail 365 | Application Maintenance | PCR Number # PCRSDI-12101 Mar 1, 2026 07:30-09:30 UTC
Services :: DI E-Mail 365
PCR Number :: PCRSDI-12101
Start Date and Time (GMT):: 1st Mar 2026 02:00 UTC.
End Date and Time (GMT):: 1st Mar 2026 04:00 UTC.
Description:
Email365 - AMI update – retarus-aa and retarus-us-aa modules .
This AMI update is to upgrade the OS to latest version with updated security updates .
Zero/No impact on traffic .
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 Feb 03, 2026 - 06:49 UTC
PCR Number :: PCRSDI-12101
Start Date and Time (GMT):: 1st Mar 2026 02:00 UTC.
End Date and Time (GMT):: 1st Mar 2026 04:00 UTC.
Description:
Email365 - AMI update – retarus-aa and retarus-us-aa modules .
This AMI update is to upgrade the OS to latest version with updated security updates .
Zero/No impact on traffic .
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 Feb 03, 2026 - 06:49 UTC
Sinch Maintenance - SSL Certificate Renewal. Mar 2, 2026 09:00-12:00 UTC
Update -
Sinch will be performing a scheduled maintenance to renew our SSL certificates.
Certificates affected by this maintenance:
*.smpp.api.sinch.com
eu1.smpp.api.sinch.com
Endpoints affected by this maintenance:
eu.smpp.api.sinch.com
eu1.smpp.api.sinch.com
us.smpp.api.sinch.com
us7.smpp.api.sinch.com
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.
Start Time: 2026-03-02 09:00 UTC
End Time: 2026-03-02 12:00 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.
Download the certificate files for all the above mentioned certificates here:
https://clxgroup.sharepoint.com/:f:/s/CLX_Support_Anonymous_link/IgAWvXx4dJ_oTrcHM1vo8zFCASXHd3ByVDaCaO6BvmKoy8M?e=sQhf7n
Feb 18, 2026 - 14:14 UTC
Certificates affected by this maintenance:
*.smpp.api.sinch.com
eu1.smpp.api.sinch.com
Endpoints affected by this maintenance:
eu.smpp.api.sinch.com
eu1.smpp.api.sinch.com
us.smpp.api.sinch.com
us7.smpp.api.sinch.com
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.
Start Time: 2026-03-02 09:00 UTC
End Time: 2026-03-02 12:00 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.
Download the certificate files for all the above mentioned certificates here:
https://clxgroup.sharepoint.com/:f:/s/CLX_Support_Anonymous_link/IgAWvXx4dJ_oTrcHM1vo8zFCASXHd3ByVDaCaO6BvmKoy8M?e=sQhf7n
Feb 18, 2026 - 14:14 UTC
Update -
Sinch will be performing a scheduled maintenance to renew the SSL certificate for the below endpoints.
*.smpp.api.sinch.com
us.smpp.api.sinch.com
us7.smpp.api.sinch.com
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.
Start Time: 2026-03-02 09:00 UTC
End Time: 2026-03-02 12:00 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.
Download the certificate files for all the above mentioned certificates here:
https://clxgroup.sharepoint.com/:f:/s/CLX_Support_Anonymous_link/IgCmOnGRx3TVT6Stw0ixOsKHAfoEuGl8I54s1BCHW7ZEzFA?e=IlUJSs
Jan 30, 2026 - 13:06 UTC
*.smpp.api.sinch.com
us.smpp.api.sinch.com
us7.smpp.api.sinch.com
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.
Start Time: 2026-03-02 09:00 UTC
End Time: 2026-03-02 12:00 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.
Download the certificate files for all the above mentioned certificates here:
https://clxgroup.sharepoint.com/:f:/s/CLX_Support_Anonymous_link/IgCmOnGRx3TVT6Stw0ixOsKHAfoEuGl8I54s1BCHW7ZEzFA?e=IlUJSs
Jan 30, 2026 - 13:06 UTC
Update -
Sinch will be performing a scheduled maintenance to renew the SSL certificate for the below endpoints.
*.smpp.api.sinch.com
us.smpp.api.sinch.com
us7.smpp.api.sinch.com
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.
Start Time: 2026-03-02 09:00 UTC
End Time: 2026-03-02 12:00 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.
Download the certificate files for all the above mentioned certificates here:
https://clxgroup.sharepoint.com/:u:/r/sites/CLX_Support_Anonymous_link/Shared%20Documents/TOR-5471/star.smpp.api.sinch.com-2027.crt?csf=1&web=1&e=wdpywE
Jan 27, 2026 - 12:17 UTC
*.smpp.api.sinch.com
us.smpp.api.sinch.com
us7.smpp.api.sinch.com
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.
Start Time: 2026-03-02 09:00 UTC
End Time: 2026-03-02 12:00 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.
Download the certificate files for all the above mentioned certificates here:
https://clxgroup.sharepoint.com/:u:/r/sites/CLX_Support_Anonymous_link/Shared%20Documents/TOR-5471/star.smpp.api.sinch.com-2027.crt?csf=1&web=1&e=wdpywE
Jan 27, 2026 - 12:17 UTC
Scheduled -
Sinch will be performing a scheduled maintenance to renew the SSL certificate for the below endpoints.
*.smpp.api.sinch.com
us.smpp.api.sinch.com
us7.smpp.api.sinch.com
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.
Start Time: 2026-02-18 09:00 UTC
End Time: 2026-02-18 12:00 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.
Download the certificate files for all the above mentioned certificates here:
https://clxgroup.sharepoint.com/:u:/r/sites/CLX_Support_Anonymous_link/Shared%20Documents/TOR-5471/star.smpp.api.sinch.com-2027.crt?csf=1&web=1&e=wdpywE
Jan 21, 2026 - 14:17 UTC
*.smpp.api.sinch.com
us.smpp.api.sinch.com
us7.smpp.api.sinch.com
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.
Start Time: 2026-02-18 09:00 UTC
End Time: 2026-02-18 12:00 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.
Download the certificate files for all the above mentioned certificates here:
https://clxgroup.sharepoint.com/:u:/r/sites/CLX_Support_Anonymous_link/Shared%20Documents/TOR-5471/star.smpp.api.sinch.com-2027.crt?csf=1&web=1&e=wdpywE
Jan 21, 2026 - 14:17 UTC
Sinch Emergency Maintenance - EU4 Network Hub Mar 3, 2026 02:00-05:00 UTC
Dear Client,
We are reaching out to inform you that as part of our continuous efforts to improve the performance and reliability of our services, we will be performing maintenance at our EU4 site on the schedule below.
Type: Emergency Network Maintenance
Start Time: March 3rd, 2026 02:00 UTC
End Time: March 3rd, 2026 05:00 UTC
Affected Site: EU4
Impact: Clients may experience delays for MT and MO to and from the following operators for up to 15 minutes during the maintenance window.
Orange France
Eir Ireland
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 Feb 20, 2026 - 10:09 UTC
We are reaching out to inform you that as part of our continuous efforts to improve the performance and reliability of our services, we will be performing maintenance at our EU4 site on the schedule below.
Type: Emergency Network Maintenance
Start Time: March 3rd, 2026 02:00 UTC
End Time: March 3rd, 2026 05:00 UTC
Affected Site: EU4
Impact: Clients may experience delays for MT and MO to and from the following operators for up to 15 minutes during the maintenance window.
Orange France
Eir Ireland
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 Feb 20, 2026 - 10:09 UTC
DI E-Mail 365 | Operator Services | Network Maintenance | PCR Number #PCRSDI-12105 Mar 3, 2026 07:00-09:00 UTC
Services: DI E-Mail 365
PCR Number: PCRSDI-12105
Start Date and Time (GMT): 03rd March 2026 07:00 Hrs.
End Date and Time (GMT): 03rd March 2026 09:00 Hrs.
Impact
Mobile Terminating (MT) Traffic: NO Impact.
Mobile Originated (MO) Traffic: NO Impact.
DR Notification: NO Impact.
Customers will be required to verify that their TLS connections successfully authenticate with the updated certificate.
Description:
Sinch Digital Interconnect has scheduled a planned maintenance to carry out activities on the internal networks.
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 Feb 11, 2026 - 18:44 UTC
PCR Number: PCRSDI-12105
Start Date and Time (GMT): 03rd March 2026 07:00 Hrs.
End Date and Time (GMT): 03rd March 2026 09:00 Hrs.
Impact
Mobile Terminating (MT) Traffic: NO Impact.
Mobile Originated (MO) Traffic: NO Impact.
DR Notification: NO Impact.
Customers will be required to verify that their TLS connections successfully authenticate with the updated certificate.
Description:
Sinch Digital Interconnect has scheduled a planned maintenance to carry out activities on the internal networks.
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 Feb 11, 2026 - 18:44 UTC
Network Maintenance - US5 Network Hub Mar 5, 2026 08:00-11:00 UTC
Dear Client,
We are reaching out to inform you that as part of our continuous efforts to improve the performance and reliability of our services, we will be performing maintenance at our US5 network hub on the schedule below.
Type: Network Maintenance
Start Time: 2026-03-05 08:00 UTC
End Time: 2026-03-05 11:00 UTC
Affected Site: US5
Impact: Clients may experience delays for MT and MO to and from the following countries for a few periods of up to 2 minutes each during the maintenance window.
Mexico
Chile
Bolivia
Paraguay
Colombia
Argentine
The same delays may be experienced towards the operator Interop in the USA.
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 Feb 20, 2026 - 14:28 UTC
We are reaching out to inform you that as part of our continuous efforts to improve the performance and reliability of our services, we will be performing maintenance at our US5 network hub on the schedule below.
Type: Network Maintenance
Start Time: 2026-03-05 08:00 UTC
End Time: 2026-03-05 11:00 UTC
Affected Site: US5
Impact: Clients may experience delays for MT and MO to and from the following countries for a few periods of up to 2 minutes each during the maintenance window.
Mexico
Chile
Bolivia
Paraguay
Colombia
Argentine
The same delays may be experienced towards the operator Interop in the USA.
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 Feb 20, 2026 - 14:28 UTC
DI E-Mail 365 | Application Maintenance | PCR Number # PCRSDI-12107 Mar 8, 2026 07:30-09:30 UTC
Services :: DI E-Mail 365
PCR Number :: PCRSDI-12107
Start Date and Time (GMT):: 8th Mar 2026 02:00 UTC.
End Date and Time (GMT):: 8th Mar 2026 04:00 UTC.
Description:
Email365 - AMI update – rest modules .
This AMI update is to upgrade the OS to latest version with updated security updates .
Zero/No impact on traffic .
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 Feb 12, 2026 - 06:40 UTC
PCR Number :: PCRSDI-12107
Start Date and Time (GMT):: 8th Mar 2026 02:00 UTC.
End Date and Time (GMT):: 8th Mar 2026 04:00 UTC.
Description:
Email365 - AMI update – rest modules .
This AMI update is to upgrade the OS to latest version with updated security updates .
Zero/No impact on traffic .
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 Feb 12, 2026 - 06:40 UTC
Singapore Regulatory Compliance Maintenance - A2P SMS APIs - TLS 1.3 Requirement Apr 1, 2026 00:00-01:00 UTC
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.
Posted on Nov 04, 2025 - 12:48 UTC
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.
Posted on Nov 04, 2025 - 12:48 UTC
Sinch Internal Maintenance - SSL Certificate Update Apr 7, 2026 01:00-03:00 UTC
Dear Client,
Sinch will be performing a scheduled maintenance to renew the SSL certificate for the callback.sinch.com Certificate
Type: Scheduled Maintenance
Maintenance: SSL Certificate Updates
Start Time: 01:00 UTC
End Time: 03:00 UTC
Impact: Customers using callback.sinch.com for mTLS
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.
Download the certificate files here for callback.sinch.com
https://clxgroup.sharepoint.com/:f:/s/CLX_Support_Anonymous_link/IgDu5APEHt5UTJw8PjBgpvvXAcJ6hJaffaMmPjlvvKOJrzk
Please contact support@sinch.com should you require further information or assistance.
Sincerely,
Sinch
Posted on Feb 18, 2026 - 20:27 UTC
Sinch will be performing a scheduled maintenance to renew the SSL certificate for the callback.sinch.com Certificate
Type: Scheduled Maintenance
Maintenance: SSL Certificate Updates
Start Time: 01:00 UTC
End Time: 03:00 UTC
Impact: Customers using callback.sinch.com for mTLS
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.
Download the certificate files here for callback.sinch.com
https://clxgroup.sharepoint.com/:f:/s/CLX_Support_Anonymous_link/IgDu5APEHt5UTJw8PjBgpvvXAcJ6hJaffaMmPjlvvKOJrzk
Please contact support@sinch.com should you require further information or assistance.
Sincerely,
Sinch
Posted on Feb 18, 2026 - 20:27 UTC