Sinch Outage History

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 [email protected] or +1 470.300.8394 (select ‘Support’ from the menu, option 2 for Digital Interconnect, and then option 1) and reference this notification.

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 [email protected].

We are continuing to investigate this issue.

We are continuing to investigate this issue.

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 [email protected].

We are continuing to investigate this issue.

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 [email protected].

We are continuing to investigate this issue.

We are continuing to investigate this issue.

We are continuing to investigate this issue.

Ticket Number :: MNOC-63975 Services:: DI SMS 365 (iSMS) Description :: Our internal monitoring systems have detected an issue that may be causing delays in the delivery of MO (Mobile Originated), MT (Mobile Terminated), and DLR (Delivery Report) traffic. We are currently investigating it with the highest priority. Our technical teams are actively working to identify the root cause and implement a resolution as quickly as possible. We will continue to provide updates as more information becomes available. We appreciate your patience and understanding. Impact :: Mobile Terminating (MT) Traffic: Potential delay in delivery Mobile Originated (MO) Traffic: Potential delay in delivery DR Notification : Potential delay in delivery Incident Start Date & Time (GMT) : 27th April 2026 11:55 GMT If you have any questions, please contact the Operator Service NOC immediately at [email protected] or +1 470.300.8394 (select ‘Support’ from the menu, option 2 for Digital Interconnect, and then option 1) and reference this notification.

Dear Clients, We are pleased to inform you that the issue with the isms platform has been resolved. We have monitored the results, and we confirm that the messages are processed without any delay. Incident Start Date & Time (GMT) :27th April 2026 11:55 GMT Incident End Date & Time (GMT) : 27th April 2026 12:40 GMT If you experience any issues during this Incident, please contact the Operator Service NOC immediately at [email protected] or +1 470.300.8394 (select 'support' from the menu, option 2 for Digital Interconnect and then option 1) and reference this notification.

We are currently observing delivery issues in Sweden - Telia. Incident Start Time: 2026-04-24 08:21 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 [email protected].

We are currently observing delivery issues in Norway - Telia. Incident Start Time: 2026-04-24 08:21 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 [email protected].

Ticket Number :: MNOC-63953 Services:: DI SMS 365 (iSMS) Description :: Our internal monitoring has alerted to an incident. Few of our customers connected to iSMS platform may observe potential delay in delivery of messages. 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) : 2026-04-23 17:40:37 GMT If you have any questions, please contact the Operator Service NOC immediately at [email protected] or +1 470.300.8394 (select ‘Support’ from the menu, option 2 for Digital Interconnect, and then option 1) and reference this notification.

We are continuing to investigate this issue.

We are continuing to investigate this issue. We will update once more information is available.

We are currently observing delivery issues in Mexico - AT&T. Incident Start Time: 2026-04-23 15:45 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 [email protected].

We are currently observing delivery issues in Uruguay - Antel. Incident Start Time: 2026-04-23 13:35 UTC Impact: Delayed or Failed 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 [email protected].

We are continuing to investigate this issue.

We are currently observing delivery issues O2 - UK Incident Start Time: 2026-04-23 11:16 UTC. Impact: Delayed MT's/Delayed MO's/Missing delivery receipts/Late delivery receipts We will update as soon as we have more information.

We are currently experiencing a performance degradation issues on our EU3 endpoint. To minimize impact, clients are advised to temporarily connect to the designated redundant EU1 endpoint for the duration of this issue. Clients can connect to our EU1 SMSC with the below FQDNs. Alternative Endpoints: eu1.smpp.api.sinch.com eu1.httpsms.api.sinch.com eu1.httplookup.api.sinch.com Our teams are actively investigating and working to resolve the issue as quickly as possible. If you have any questions, please contact [email protected].

We are currently experiencing issues with Conversation API SMS channel in the US region. Incident Start Time: 2026-04-22 13:20 UTC Impact: SMS requests routed via the conversation API in the US region might be rejected or throttled.

We are currently experiencing issues with Chatlayer in the US region. Incident Start Time: 2026-04-22 13:49 UTC Impact: Channels, Bot Engine and the Web User Interface in the US region.

We are continuing to investigate this issue.

We are continuing to investigate this issue.

We are currently observing delivery issues Sweden - Telia Incident Start Time: 2026-04-22 07:59 UTC. Impact: Delayed MT's/Delayed MO's/Missing delivery receipts/Late delivery receipts We will update as soon as we have more information.

We are currently experiencing an issue with our ticketing system related to the following emails: [email protected] Impact: Customers may experience delayed responses from support. As an alternative in the meantime, please raise all tickets via our ticketing portal at support.sinch.com.

Ticket Number :: MNOC-63913 Services:: DI SMS 365 (iSMS) Description :: Our internal monitoring systems have detected an issue that may be causing delays in the delivery of MO (Mobile Originated), MT (Mobile Terminated), and DLR (Delivery Report) traffic. We are currently investigating it with the highest priority. Our technical teams are actively working to identify the root cause and implement a resolution as quickly as possible. We will continue to provide updates as more information becomes available. We appreciate your patience and understanding. Impact :: Mobile Terminating (MT) Traffic: Potential delay in delivery Mobile Originated (MO) Traffic: Potential delay in delivery DR Notification : Potential delay in delivery Incident Start Date & Time (GMT) : 20th April 2026 10:15 GMT If you have any questions, please contact the Operator Service NOC immediately at [email protected] or +1 470.300.8394 (select ‘Support’ from the menu, option 2 for Digital Interconnect, and then option 1) and reference this notification.

Sending WhatsApps messages through API is not working since we do not provide requirement fields to identify WhatsApps Template.

WhatsApps sendings through web application is working.

We are currently observing delivery issues in United States - AT&T Incident Start Time: 2026-04-18 01:25 UTC We will update as soon as we have more information. If you have any questions, please contact [email protected].

We are continuing to investigate this issue.

We are continuing to investigate this issue.

We are currently observing delivery issues in Cuba - Cubacel Incident Start Time: 2026-04-18 00:23 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 [email protected].

We are continuing to investigate this issue.

We are continuing to investigate this issue.

We are continuing to investigate this issue.

We are currently investigating an issue affecting Sinch Engage Social Campaigns where users may be unable to create new campaigns from the Social Messaging - All Campaigns section. Impact: Clicking the Create button may result in no action, and campaign creation is currently impacted. We will provide further updates as more information becomes available.

We are continuing to investigate this issue.

We are currently observing delivery issues in Angola - Africell Incident Start Time: 2026-04-17 08:12 UTC Impact: Delayed MT's/Delayed MO's/Missing delivery receipts/Late delivery receipts We will update as soon as we have more information.

We are currently experiencing a network disturbance on our US7 site. Our engineers are currently investigating. To maintain uninterrupted service, clients are advised to connect to the corresponding redundant site indicated below: Impacted endpoints: us7.smpp.api.sinch.com us7.httpsms.api.sinch.com us7.httplookup.api.sinch.com Corresponding redundant endpoints are available: us1.smpp.api.sinch.com us1.httpsms.api.sinch.com us1.httplookup.api.sinch.com We will provide ongoing updates on this page. For any inquiries, please contact us at [email protected].

We are currently investigating an issue with creating message templates in Sinch Engage Legacy. Incident Start Time: 2026-04-15 10:10 UTC Impact: Clients may experience errors when attempting to create new message templates via the “Create a template” option. This issue is affecting multiple accounts and preventing template creation. We will provide further updates as more information becomes available.