Send
Trigger SMS and MMS from your app.
SMS API
SMS API & MMS API for Developers: Send, Receive and Track at Scale
Send SMS and MMS, manage contacts and run phone lookups from your own application. Receive message, reply and contact events in real time through webhooks.
SMS
MMS
Reply received
Delivered
The API
What Is an SMS API?
An SMS API lets your software send and receive text messages without a person using a dashboard. Reach Bullet adds contacts, lookups and events in the same API.
Manage
Create and update contacts in code.
Listen
Receive events as they happen.
Endpoints
One API for Messaging, Contacts and Phone Lookups
Everything you need to run messaging inside your own product. No extra services to stitch together.
Messaging API
Trigger SMS and MMS directly from your application.
Contact API
Create, update and manage contacts without manual imports.
Phone Intelligence API
Run number lookups from inside existing systems.
Webhook events
Receive campaign, message, reply and contact events in real time.
Webhooks
Webhook Events for Replies, Messages and Contacts
Do not poll for changes. Reach Bullet sends events to your server when they happen.
Reply events
Route responses to your own systems.
Message events
Track message activity in your app.
Contact and campaign events
Keep your data in sync.
FAQs
Everything you need to know about the SMS API.
What is an SMS API?
It is a way for your software to send and receive text messages programmatically, using HTTP requests instead of a dashboard.
What can I do with the Reach Bullet API?
Send SMS and MMS, manage contacts, run phone lookups and receive webhook events for messages, replies, campaigns and contacts.
Can I send MMS through the API?
Yes. The messaging API supports both SMS and MMS.
How do I authenticate requests?
Send your API key as a bearer token in the Authorization header.
Can I run phone number lookups through the API?
Yes. The Phone Intelligence API returns validity, line type and carrier details.
Do I need carrier registration to send through an API?
For US business texting, carriers generally require registration and consent. Read our Messaging Compliance page before you send.
Compliance
Built for US Messaging Rules
Sending through an API does not remove the rules. US business texting generally requires consent, opt-out handling and carrier registration.