Send SMS from your Android device
Turn any Android phone into a powerful SMS gateway. Send messages programmatically, build notifications, and reach users at scale — no SIM bank, no hardware, just your phone.
Free tier included · No credit card required
Everything you need
Android Gateway App
Install the ColdSMS app on your Android phone. Your device becomes your personal SMS gateway.
REST API
Send SMS programmatically via a clean, well-documented REST API. Integrate with any language.
Instant Delivery
Messages route through your device in real time. Get delivery receipts and track status.
Secure by Default
API key authentication, HTTPS-only, and encrypted storage. Your credentials stay protected.
Ready to send your first message?
Create a free account, install the Android app, and start sending SMS through your device in under five minutes.
Get started free