THIS IS A SCHEDULED EVENT Nov <var data-var='date'>19</var>, <var data-var='time'>05:00</var> - <var data-var='time'>11:00</var> UTC Oct <var data-var='date'> 1</var>, <var data-var='time'>03:17</var> 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: 2026-11-19 05:00 UTC Maintenance End Time: 2026-11-19 11:00 UTC

External Maintenance - US and Canada

THIS IS A SCHEDULED EVENT Oct <var data-var='date'>29</var>, <var data-var='time'>03:00</var> - <var data-var='time'>07:00</var> UTC Sep <var data-var='date'> 4</var>, <var data-var='time'>08:53</var> UTC Scheduled - An external supplier 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: 2026-10-29 03:00 UTC Maintenance End Time: 2026-10-29 07:00 UTC

External Maintenance - United States and Canada

THIS IS A SCHEDULED EVENT Oct <var data-var='date'>22</var>, <var data-var='time'>03:00</var> - <var data-var='time'>04:00</var> UTC Oct <var data-var='date'> 7</var>, <var data-var='time'>01:15</var> UTC Scheduled - Sinch Elastic SIP Trunking will be undergoing maintenance to update the database software version . 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.

Sinch Scheduled Maintenance - Elastic SIP Trunking - database version update

THIS IS A SCHEDULED EVENT Oct <var data-var='date'>22</var>, <var data-var='time'>03:00</var> - <var data-var='time'>07:00</var> UTC Sep <var data-var='date'> 4</var>, <var data-var='time'>08:49</var> UTC Scheduled - An external supplier 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: 2026-10-22 03:00 UTC Maintenance End Time: 2026-10-22 07:00 UTC

THIS IS A SCHEDULED EVENT Oct <var data-var='date'>20</var>, <var data-var='time'>07:00</var> - <var data-var='time'>10:00</var> UTC Oct <var data-var='date'> 6</var>, <var data-var='time'>10:55</var> UTC Scheduled - Sinch will be performing a scheduled maintenance to renew the SSL certificate's. Type: Scheduled Maintenance Maintenance: SSL Certificate Updates Start Time: 2026-10-20 07:00 UTC End Time: 2026-10-20 10:00 UTC Impact: sms.api.sinch.com, us.sms.api.sinch.com, eu1.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/IgALRDsM8tADTai40OEYnKelASGNnSO-pEEyNQaCDUec0pQ

Sinch Maintenance - SSL Certificate Renewal

THIS IS A SCHEDULED EVENT Oct <var data-var='date'>18</var>, <var data-var='time'>01:00</var> UTC &nbsp;-&nbsp; Oct <var data-var='date'>19</var>, <var data-var='time'>07:00</var> UTC Oct <var data-var='date'> 6</var>, <var data-var='time'>09:13</var> UTC Scheduled - Dear Customer, We will be performing Contact Pro maintenance and version upgrade as follows. Start time: 2026-10-18 (Sunday) 1 AM UTC End time: 2026-10-19 (Monday) 7 AM UTC Version upgrade will require max. 30 minutes downtime to all channels and user interfaces. This will take place at some point during the maintenace window. What´s new documentation regarding the upcoming 26Q4 release can be accessed from: https://docs.cc.sinch.com/cloud/whats-new/en/index.html For more details or questions related to the maintenance you can contact us via a support ticket: https://sinchenterprise.atlassian.net/servicedesk/customer/portal/1181 Best Regards, Sinch Contact Pro team

Sinch Contact Pro Quarterly Maintenance - Americas

THIS IS A SCHEDULED EVENT Oct <var data-var='date'>17</var>, <var data-var='time'>16:00</var> UTC &nbsp;-&nbsp; Oct <var data-var='date'>18</var>, <var data-var='time'>22:00</var> UTC Oct <var data-var='date'> 6</var>, <var data-var='time'>09:12</var> UTC Scheduled - Dear Customer, We will be performing Contact Pro version upgrade as follows. Start time: 2026-10-17 (Saturday) 4 PM UTC End time: 2026-10-18 (Sunday) 10 PM UTC Version upgrade will require max. 30 minutes downtime to all channels and user interfaces. This will take place at some point during the maintenace window. What´s new documentation regarding the upcoming 26Q4 release can be accessed from: https://docs.cc.sinch.com/cloud/whats-new/en/index.html For more details or questions related to the maintenance you can contact us via a support ticket: https://sinchenterprise.atlassian.net/servicedesk/customer/portal/1181 Best Regards, Sinch Contact Pro team

Sinch Contact Pro Quarterly Maintenance - EU

THIS IS A SCHEDULED EVENT Oct <var data-var='date'>17</var>, <var data-var='time'>16:00</var> UTC &nbsp;-&nbsp; Oct <var data-var='date'>18</var>, <var data-var='time'>22:00</var> UTC Oct <var data-var='date'> 6</var>, <var data-var='time'>09:11</var> UTC Scheduled - Dear Customer, We will be performing Contact Pro version upgrade as follows. Start time: 2026-10-17 (Saturday) 4 PM UTC End time: 2026-10-18 (Sunday) 10 PM UTC Version upgrade will require max. 30 minutes downtime to all channels and user interfaces. This will take place at some point during the maintenace window. What´s new documentation regarding the upcoming 26Q4 release can be accessed from: https://docs.cc.sinch.com/cloud/whats-new/en/index.html For more details or questions related to the maintenance you can contact us via a support ticket: https://sinchenterprise.atlassian.net/servicedesk/customer/portal/1181 Best Regards, Sinch Contact Pro team

Sinch Contact Pro Quarterly Maintenance - AF

THIS IS A SCHEDULED EVENT Oct <var data-var='date'>17</var>, <var data-var='time'>10:00</var> UTC &nbsp;-&nbsp; Oct <var data-var='date'>18</var>, <var data-var='time'>16:00</var> UTC Oct <var data-var='date'> 6</var>, <var data-var='time'>09:12</var> UTC Scheduled - Dear Customer, We will be performing Contact Pro version upgrade as follows. Start time: 2026-10-17 (Saturday) 10 AM UTC End time: 2026-10-18 (Sunday) 4 PM UTC Version upgrade will require max. 30 minutes downtime to all channels and user interfaces. This will take place at some point during the maintenace window. What´s new documentation regarding the upcoming 26Q4 release can be accessed from: https://docs.cc.sinch.com/cloud/whats-new/en/index.html For more details or questions related to the maintenance you can contact us via a support ticket: https://sinchenterprise.atlassian.net/servicedesk/customer/portal/1181 Best Regards, Sinch Contact Pro team

Sinch Contact Pro Quarterly Maintenance - AU

THIS IS A SCHEDULED EVENT Oct <var data-var='date'>15</var>, <var data-var='time'>11:00</var> - <var data-var='time'>12:00</var> UTC Oct <var data-var='date'> 1</var>, <var data-var='time'>12:38</var> UTC Update - We will be undergoing scheduled maintenance during this time. Oct <var data-var='date'> 1</var>, <var data-var='time'>12:32</var> UTC Scheduled - We are writing to inform you that, as part of our continuous efforts to improve the performance, stability, and reliability of our platform, we will be performing scheduled maintenance on the XMS Traffic platform at the times specified below. Type: Maintenance – XMS Infra updates Start Time: 2026-10-15 11:00 UTC End Time: 2026-10-15 12:00 UTC Impact: XMS Traffic – AU During the maintenance window, clients making GET requests may experience intermittent service interruptions, increased response times, or temporary request failures due to the infra update activities. 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.

Planned Maintenance - XMS AU Infrastructure Update

THIS IS A SCHEDULED EVENT Oct <var data-var='date'>15</var>, <var data-var='time'>07:00</var> - <var data-var='time'>08:00</var> UTC Oct <var data-var='date'> 1</var>, <var data-var='time'>12:47</var> UTC Scheduled - We are writing to inform you that, as part of our continuous efforts to improve the performance, stability, and reliability of our platform, we will be performing scheduled maintenance on the XMS Traffic platform at the times specified below. Type: Maintenance – XMS Infra updates Start Time: 2026-10-15 07:00 UTC End Time: 2026-10-15 08:00 UTC Impact: XMS Traffic – BR, CA During the maintenance window, clients making GET requests may experience intermittent service interruptions, increased response times, or temporary request failures due to the infra update activities. 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.

Planned Maintenance - XMS BR and CA Infrastructure Update

THIS IS A SCHEDULED EVENT Oct <var data-var='date'>15</var>, <var data-var='time'>07:00</var> - <var data-var='time'>08:00</var> UTC Sep <var data-var='date'>24</var>, <var data-var='time'>17:58</var> UTC Update - We are writing to inform you that the concerned maintenance activity has been postponed to the below mentioned timeframe. Type: Service Announcement & Maintenance Previous Start Time: 2026-10-01 07:00 UTC Previous End Time: 2026-10-01 08:00 UTC New Start Time: 2026-10-15 07:00 UTC New End Time: 2026-10-15 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 2026-10-15 during the aforementioned time window. US SMPP: us6.smpp.api.sinch.com: US HTTP SMS: us6.httpsms.api.sinch.com US Lookup API: us6.httplookup.api.sinch.com 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. Jul <var data-var='date'>10</var>, <var data-var='time'>08:37</var> UTC Scheduled - 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.

Service Announcement & Maintenance: New SMSC Site & Whitelisting Requirements - US Region

THIS IS A SCHEDULED EVENT Oct <var data-var='date'>15</var>, <var data-var='time'>04:00</var> - <var data-var='time'>06:00</var> UTC Oct <var data-var='date'> 1</var>, <var data-var='time'>16:30</var> UTC Update - We are writing to inform you that the concerned maintenance activity has been postponed to the below mentioned timeframe. Type: Network Maintenance Affected Site: EU Previous Start Time: 2026-10-06 04:00 UTC Previous End Time: 2026-10-06 06:00 UTC New Start Time: 2026-10-15 04:00 UTC New End Time: 2026-10-15 06:00 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 <var data-var='date'>22</var>, <var data-var='time'>15:58</var> UTC Scheduled - We are reaching out to inform you that a maintenance will be performed on our EU network infrastructure during the scheduled time window below. Type: Network Maintenance Affected Site: EU Maintenance Start Time: 2026-10-06 04:00 UTC Maintenance End Time: 2026-10-06 06:00 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.

Sinch Internal Maintenance - EU Network Infrastructure

THIS IS A SCHEDULED EVENT Oct <var data-var='date'>15</var>, <var data-var='time'>04:00</var> - <var data-var='time'>10:00</var> UTC Sep <var data-var='date'> 4</var>, <var data-var='time'>17:20</var> 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: 2026-10-15 04:00 UTC Maintenance End Time: 2026-10-15 10:00 UTC

THIS IS A SCHEDULED EVENT Oct <var data-var='date'>15</var>, <var data-var='time'>03:00</var> - <var data-var='time'>07:00</var> UTC Sep <var data-var='date'> 4</var>, <var data-var='time'>08:44</var> UTC Scheduled - An external supplier 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: 2026-10-15 03:00 UTC Maintenance End Time: 2026-10-15 07:00 UTC

THIS IS A SCHEDULED EVENT Oct <var data-var='date'>14</var>, <var data-var='time'>06:00</var> - <var data-var='time'>16:00</var> UTC Sep <var data-var='date'>22</var>, <var data-var='time'>18:39</var> UTC Scheduled - We'll be performing scheduled maintenance on our Chatlayer platform infrastructure to improve resource management and monitoring capabilities. No service impact is expected during this maintenance. Maintenance windows per region (UTC): EMEA: 06:00 – 07:00 Americas (US): 08:00 – 09:00 Americas (South America): 09:00 – 10:00 APAC (India): 15:00 – 16:00 Chatlayer is expected to remain fully operational throughout. We will update this page if anything changes.

Sinch Internal Maintenance – Chatlayer Platform

THIS IS A SCHEDULED EVENT Oct <var data-var='date'>14</var>, <var data-var='time'>03:00</var> - <var data-var='time'>04:00</var> UTC Oct <var data-var='date'> 7</var>, <var data-var='time'>01:08</var> UTC Scheduled - Sinch Elastic SIP Trunking will be undergoing maintenance to resolve an issue with additional SIP call legs/transactions after the call is completed. The scheduled work will not cause any impact to 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.

Sinch Scheduled Maintenance - Elastic SIP Trunking - Voice Applications

THIS IS A SCHEDULED EVENT Oct <var data-var='date'>14</var>, <var data-var='time'>03:00</var> - <var data-var='time'>10:00</var> UTC Sep <var data-var='date'>21</var>, <var data-var='time'>19:45</var> 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: 2026-10-14 03:00 UTC Maintenance End Time: 2026-10-14 10:00 UTC

THIS IS A SCHEDULED EVENT Oct <var data-var='date'>13</var>, <var data-var='time'>21:00</var> - <var data-var='time'>22:00</var> UTC Oct <var data-var='date'> 7</var>, <var data-var='time'>12:51</var> UTC Scheduled - We will be performing scheduled database maintenance on Campaigns France. The platform will be unavailable for less than 3 hours. Impacted services: * Campaigns UI (platform.myelefant.com) * Campaigns APIs (api.myelefant.com) * SFTP Connectors Not impacted: * Landing Pages What this means for you: * You will not be able to log in, send campaigns, or use the API during the maintenance window. * Campaigns scheduled during this window will not be lost. They will be sent automatically as soon as the maintenance is complete. We apologize for any inconvenience and appreciate your understanding. We will post an update here as soon as the maintenance is finished.

Database maintenance for Campaigns France

THIS IS A SCHEDULED EVENT Oct <var data-var='date'>13</var>, <var data-var='time'>04:00</var> - <var data-var='time'>10:00</var> UTC Sep <var data-var='date'> 4</var>, <var data-var='time'>17:32</var> 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: 2026-10-13 04:00 UTC Maintenance End Time: 2026-10-13 10:00 UTC

THIS IS A SCHEDULED EVENT Oct <var data-var='date'>13</var>, <var data-var='time'>03:00</var> - <var data-var='time'>10:00</var> UTC Sep <var data-var='date'>18</var>, <var data-var='time'>21:49</var> 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: 2026-10-13 03:00 UTC Maintenance end time: 2026-10-13 10:00 UTC

THIS IS A SCHEDULED EVENT Oct <var data-var='date'>8</var>, <var data-var='time'>04:00</var> - <var data-var='time'>10:00</var> UTC Sep <var data-var='date'> 4</var>, <var data-var='time'>16:37</var> 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: 2026-10-08 04:00 UTC Maintenance End Time: 2026-10-08 10:00 UTC

THIS IS A SCHEDULED EVENT Oct <var data-var='date'>8</var>, <var data-var='time'>03:00</var> - <var data-var='time'>04:00</var> UTC Oct <var data-var='date'> 7</var>, <var data-var='time'>01:00</var> UTC Scheduled - Sinch Elastic SIP Trunking will be undergoing emergency maintenance to resolve an issue with PIDF-LO - the scheduled work is not expected to impact services. 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.

Sinch Emergency Maintenance - Elastic SIP Trunking - PIDF-LO

THIS IS A SCHEDULED EVENT Oct <var data-var='date'>8</var>, <var data-var='time'>03:00</var> - <var data-var='time'>12:00</var> UTC Oct <var data-var='date'> 6</var>, <var data-var='time'>09:09</var> UTC Scheduled - Our 10DLC Provider has scheduled a maintenance. Impact: Delayed MT's/Delayed MO's/Missing delivery receipts/Late delivery receipts Maintenance start time: 2026-10-08 03:00 UTC Maintenance end time: 2026-10-08 12:00 UTC

External Maintenance - United States - 10DLC Provider

THIS IS A SCHEDULED EVENT Oct <var data-var='date'>8</var>, <var data-var='time'>03:00</var> - <var data-var='time'>07:00</var> UTC Sep <var data-var='date'> 4</var>, <var data-var='time'>08:38</var> UTC Scheduled - An external supplier 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: 2026-10-08 03:00 UTC Maintenance End Time: 2026-10-08 07:00 UTC

SMS - APAC

SMS - EMEA

SMS - LATAM

SMS - CA - ShortCode

SMS - CA - Toll Free

SMS - US - ShortCode

SMS - US - Toll Free

SMS - US - 10DLC

MMS - US

MMS - US - Toll Free

MMS - US - 10DLC

MMS - AU

MMS - APAC

External Connectivity

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Video Calling

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Apple Messages

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Batch API

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SMPP - CA

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HTTP - US

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REST - US

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REST - AU

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REST - BR

MMS - CA

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SMS Template Management API - EU

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Contact Pro - AF (South Africa)

Contact Pro - AU (Australia)

Contact Pro - EU (Europe)

Contact Pro - NA (North America)

Contact Pro

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Numbers API

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Dashboard.sinch.com

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Campaigns API (France 🇫🇷)

sFTP Connectors (France 🇫🇷)

Campaigns (Europe 🇪🇺)

Campaigns API (Europe 🇪🇺)

sFTP Connectors (Europe 🇪🇺)

Campaigns (North America 🇺🇸 / 🇨🇦)

Campaigns API (North America 🇺🇸 / 🇨🇦)

sFTP Connectors (North America 🇺🇸 / 🇨🇦)

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Notifications

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Fax API

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API, SMPP, webhooks, email to SMS

Engage Classic (appengage.sinch.com)

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Legacy Brands (MessageNet, DirectSMS, MobiPost, SMS Central, Wholesale SMS, Streetdata)

Is Sinch down?

Sinch status is DEGRADED

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Lastest published events

External Maintenance - US and Canada

External Maintenance - United States and Canada

Sinch Scheduled Maintenance - Elastic SIP Trunking - database version update

Sinch Services, Components and Regions

Recent Sinch events

External Maintenance - US and Canada

External Maintenance - United States and Canada

Sinch Scheduled Maintenance - Elastic SIP Trunking - database version update

External Maintenance - United States and Canada

Sinch Maintenance - SSL Certificate Renewal

Sinch Contact Pro Quarterly Maintenance - Americas