TextMarks Text Message API
The easiest to use, most reliable SMS API available.


Inbound API

Text Message Request/Response

Provide on-demand access to information via text message with your own “SMS Auto-Responder”.

Users send a text message beginning with your keyword to our shared shortcode 41411, our servers HTTP request to your servers (a "callback" or "web hook"), your scripts look up the info requested and respond, and we instantly forward that to the user as another text message.

Outbound API

Send Text Messages by API

Notify your users by text message. Make an HTTP request to our API server and we handle the rest, with near instant delivery.

Send to individuals or groups. Users can join your list by texting your keyword to our shared shortcode 41411. We handle carrier compliance and group membership so you can focus on your application and business.

Advanced API

Advanced API Integrations

The “Send Text Messages by API” above is part of our larger API, ready for you to access more data, manage keywords, statistics, group membership, and more -- enough to build your own white label version of the TextMarks service!

Our API is built on modern lightweight web standards like basic HTTP and JSON. Our documentation and tools let you discover what's possible and make calls in your browser without writing a single line of code. Our protocols are open and easy to implement, and we offer production-ready client libraries for Python, PHP, Java, and .NET.

Did you know...

Did you know that our entire website is built on top of our own API?

That's how powerful and reliable it is.

If our API is down, we're down.

More Information

Which TextMarks SMS API Is Right For Me?

Features

SMS Auto Responders

SMS Sending API

Advanced Deep Integration
Capture text messages sent to 41411

Yes

No

No

Send individual text messages from 41411

Yes

Yes

Yes

Send mass text messages from 41411

No

Yes

Yes

Compliance
SMS Auto Responders
SMS Sending API
Advanced Deep Integration
Fully carrier and TCPA compliant

Yes

Yes

Yes

Phone# list uploads allowed

N/A

No

No

Pricing
SMS Auto Responders
SMS Sending API
Advanced Deep Integration
Free version?

Sorry, we offer a paid service only

Sorry, we offer a paid service only

Sorry, we offer a paid service only

Billing

Easy automatic monthly credit card billing

Easy automatic monthly credit card billing

Easy automatic monthly credit card billing

Price

Pricing plans starting at $49/mo

Pricing plans starting at $49/mo

Pricing plans starting at $49/mo

Free Trial?

14 days, can be extended by request

14 days, can be extended by request

14 days, can be extended by request

End users pay?

Msg & data rates may apply, but service is otherwise free to end users

Msg & data rates may apply, but service is otherwise free to end users

Msg & data rates may apply, but service is otherwise free to end users

Integration
SMS Auto Responders
SMS Sending API
Advanced Deep Integration
Technical Challenge

Easy

Medium

Hard

Can Be Used Without API Key

Yes

Yes

No

Works with other TextMarks services

Yes

Yes

Yes

Easy web-based admin UI and reporting

Yes

Yes

Yes

Can be used without client library?

Yes

No

No

Client libraries available

Yes

Yes

Yes

More Info
SMS Auto Responders
SMS Sending API
Advanced Deep Integration
All Major U.S. Carriers Supported

Yes

Yes

Yes

International Support (Non-U.S.)

No

No

No

High volume support

Yes

Yes

Yes

Rapid rate support

Yes

Yes

Yes

99.9% uptime guarantee

Yes

Yes

Yes

Have questions? Ready to start?

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