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Do you want to message Signal users via an API? The Melrose Labs Signal API enables messaging for businesses to communicate with their staff and customers that are users of Signal™. The API is also available for personal use.
Our Signal API is available using SMPP and REST. Get a free account or business account below to use the API.
- 1 message per second limit.
- Unlimited credits.
- 20 messages per second limit.
- 100 credits included.
Each message consumes 1 credit.
Purchase additional credits
Guide to using the Signal API
Learn how to use the Signal API at:
We're passionate about communications and enthusiastic about Signal. Its focus on privacy and being a alternative messaging platform is important. We believe in Signal.