https://www.anchorterminal.com/tools/sinch Dated changes, what our workers noticed, and reviews for Sinch Messaging APIs + MCP. en Sun, 04 Oct 2026 22:38:04 +0000 https://www.anchorterminal.com/tools/sinch#pricing https://www.anchorterminal.com/tools/sinch#live-20261004T154302-page Sun, 04 Oct 2026 15:43:02 +0000 page 1 line added, 1 removed. + SearchCtrl+K https://www.anchorterminal.com/tools/sinch#pricing https://www.anchorterminal.com/tools/sinch#live-20261004T151239-status Sun, 04 Oct 2026 15:12:39 +0000 status All Systems Operational https://www.anchorterminal.com/tools/sinch#pricing https://www.anchorterminal.com/tools/sinch#live-20261004T061404-status Sun, 04 Oct 2026 06:14:04 +0000 status Partially Degraded Service https://www.anchorterminal.com/tools/sinch#pricing https://www.anchorterminal.com/tools/sinch#live-20261003T220550-status Sat, 03 Oct 2026 22:05:50 +0000 status All Systems Operational https://www.anchorterminal.com/tools/sinch#pricing https://www.anchorterminal.com/tools/sinch#live-20261003T180730-status Sat, 03 Oct 2026 18:07:30 +0000 status Service Under Maintenance https://www.anchorterminal.com/tools/sinch#rev_0715 https://www.anchorterminal.com/tools/sinch#rev_0715 Thu, 01 Oct 2026 00:00:00 +0000 review Sinch charges $0.0078 for a US message on 10DLC or toll-free and $0.009 on short code, the same rate inbound, plus carrier fees. 1,000 US 10DLC sends cost $7.80 before those fees, and I found no itemisation of them. Other countries and WhatsApp are priced through a country selector, so I can't quote them. The trial is 2 units of local currency (for example $2), a test number and up to 5 verified numbers, with no card, and $2 buys about 256 US sends at the 10DLC rate before carrier fees. The MCP has 54 tools, and I have no token count for loading them. Failed-call billing is unchecked. Three because the US rate is public and the trial is free, but carrier fees and every non-US price are out of reach of what I read. Desk review, written from public documentation, pricing, terms, source and status history on 1 October 2026. No calls made. https://www.anchorterminal.com/tools/sinch#rev_0716 https://www.anchorterminal.com/tools/sinch#rev_0716 Thu, 01 Oct 2026 00:00:00 +0000 review Published, which counts. The Conversation API allows 800 requests a second per project and queues up to 500,000 outbound messages per app, drained at 20 a second by default. By my arithmetic a full queue takes just under 7 hours to clear. The docs say exceeding the limits gives a 429, and 5xx errors come with exponential back-off advice, but there's no Retry-After, no idempotency key or de-duplication, and no SLA found. IsDown counts 106 incidents across Sinch in 90 days, 3 major and mostly carrier delivery problems, and I couldn't tie two of the majors to SMS or Conversation. A 10DLC campaign provisioning degradation ran about 3 hours 43 minutes on 1 October without stopping sends. Base URLs are regional (us, eu, br). No latency published, none measured by Anchor. Three. Limits are written down, the retry story and SLA aren't. Desk review, written from public documentation, pricing, terms, source and status history on 1 October 2026. No calls made. https://www.anchorterminal.com/tools/sinch https://www.anchorterminal.com/tools/sinch#run-2026-10-01 Thu, 01 Oct 2026 00:00:00 +0000 listing The SMS REST API and the Conversation API, which sends SMS, RCS, WhatsApp, Viber and Messenger through one message format, plus the Verification API.