Sinch
SMS, voice, Conversation API
Official site consultedSMS and messaging
Last verified: 5 October 2026
Sinch offers messaging APIs (SMS, WhatsApp, RCS, Conversation API), voice and video, numbers and verification. The developer portal gathers the documentation for each product.
Services
- Conversation API and SMS
- Voice API and in-app voice/video SDK
- Verification API and Number Lookup
- Numbers API
- Fax API
Access requirements
A free account on the Sinch Build Dashboard provides an API token, a Service Plan ID and a free virtual number for testing.
Sources
- Sinch, SMS premiers pas (new tab), verified on 5 October 2026Official site consulted
- Sinch (new tab), verified on 1 October 2026Official site consulted