FreeClimb Docs

Send and receive SMS and MMS messages in your applications with FreeClimb API.

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Build Your App Two-factor Authentication Error Codes Learn More

Add voice calling capabilities to your applications using FreeClimb API and PerCL.

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Build Your App Advanced Features Error Codes Learn More

For pricing information, see API Pricing . For more information on Messaging, see our Carrier Messaging Surcharge and Fees page.