Integrated Faxing / Developer API

Developer Resources

There’s never a “one-size-fits-all” solution. That’s why we provide an integrated and secure cloud fax platform to give your developers the tools to create an integrated, secure cloud fax platform that enhances your IT and business infrastructure. Review our options below and visit our Developer Community to learn more.


Client Libraries

Get up and running in minutes, using our libraries to integrate with Java, .Net, PHP, Ruby, and more.

GitHub Libraries »

Developer's Guide

Here’s your one-stop-shop to find out how it all fits together.

Developer’s Guide »

API Methods

Review our full documentation of all API methods, including REST and SOAP.

View Documentation »

What You Get

Free Registration

It costs nothing to join our developer program.


Free Support

Our support team ensures you have everything you need to get your application up and running.

Free Faxing

Send as many test faxes as you need to one designated fax number.


Access to Developer API

Your choice of REST API, SOAP API, or SMTP interface.

Features and Benefits of InterFAX

No Installations

No need to worry about fax software, servers, or phone lines. Be up and running in minutes.


Global Reach

Our fax servers are distributed over four continents. Send faxes wherever you are.


Unlimited Scalability

Whether you need to send ten faxes or ten thousand, our servers get the job done.


Full Control

Web-based administration screens allow you to monitor activity and control settings.

Encrypted Fax

Enhanced data security with SSL access and encryption for inbound/outbound fax messages.



Complies with the most stringent industry regulations, including the US-based Health Insurance Portability and Accountability Act (HIPAA) and the Canadian Personal Health Information Protection Act (PHIPA).


Outbound PCI DSS Fax

Complies with this mandatory standard, ensuring the highest level of security for faxing credit card data.


EU Data Protection

Complies with the EU Data Protection Directive, ensuring that all faxes are handled within the EU.

Sign Up Today for a Developer Account