About Sinch
Sinch is a commercial communications platform that exposes channels such as SMS, RCS, MMS, WhatsApp, email and voice through developer APIs. Businesses use it to send customer updates, run marketing campaigns, verify identities and handle conversations without managing carrier relationships directly.
Besides raw APIs, the vendor lists packaged applications, including a messaging platform, an email platform, a chatbot builder and a contact center product, as well as numbers and SIP trunking services for telephony. It also describes AI, security and compliance capabilities across the portfolio. Sinch is delivered as a hosted service, and it suits both developer teams and non-technical marketing or support teams.
Key features
- Messaging APIs across SMS, MMS, RCS and WhatsApp
- Voice APIs and SIP trunking
- Email API and platform
- Verification APIs for sign-up and login
- Phone number provisioning
- Chatbot builder and contact center tools
Good fit for
- →Customer update and alert messaging
- →Identity verification during onboarding
- →Marketing campaigns across several channels
- Tags
- sms
- voice
- verification
- communications-api
- messaging
Sinch: questions and answers
- What is Sinch used for?
- Sinch offers messaging, voice, email and verification APIs plus customer communication applications, for businesses that reach customers across many channels. It is a good fit for customer update and alert messaging, identity verification during onboarding, and marketing campaigns across several channels.
- Is Sinch open source?
- No. Sinch is proprietary (closed-source) software and can't be self-hosted. Open-source alternatives to Sinch include Fonoster.
- What are some alternatives to Sinch?
- Sinch competes with Twilio, Vonage API and Bird. For open-source options, see Enlisted's ranked list of open-source Sinch alternatives.
Open-source alternatives to Sinch
See all
Fonoster
Backend as a Service
🚀 The open-source alternative to Twilio.
MITvs Twilio★ 8.1k
Novu
Backend as a Service
The open-source communication infrastructure for agents and products
OSSvs Knock★ 40k
OpenIM
Backend as a Service
IM Chat OpenClaw
Apache-2.0vs Sendbird★ 17k
Gotify
Backend as a Service
a simple server for sending and receiving messages
OSS★ 16k
Centrifugo
Backend as a Service
Centrifugo is an open-source real-time messaging server — a self-hosted alternative to Pub
Apache-2.0vs Pusher★ 11k
Supabase
Backend as a Service
The Postgres development platform. Supabase gives you a dedicated Postgres database to bui
Apache-2.0vs Firebase★ 111k
SaaS alternatives to Sinch
See all
Twilio
Backend as a Service
Communications APIs for SMS, voice, video, email and verification
SaaS
Vonage API
Backend as a Service
Communications APIs for messaging, voice, video and verification
SaaS
Bird
Email Marketing
Omnichannel messaging platform combining the former MessageBird and SparkPost
SaaS
Gupshup
Backend as a Service
Conversational messaging platform with APIs for WhatsApp, RCS and SMS
SaaS
Infobip
Backend as a Service
Omnichannel cloud communications platform for SMS, chat apps, email and voice
SaaS
Plivo
Backend as a Service
Cloud communications API platform for SMS, voice and WhatsApp messaging
SaaS

