Fax API
Send, receive and manage fax via API over a private global IP network for unmatched flexibility, security and reliability.
Questions? Ask our experts.
More ways to fax
Fax still holds a place of importance in a rapidly changing world, especially in compliant spaces like healthcare, finance and legal. Our Fax API and global SIP trunking infrastructure enable organizations to work with fax-centric systems—without the need for traditional fax machines or infrastructure.
Fax features for total control
Send faxes over a private IP network, with powerful APIs for unmatched configurability.
Enhanced security
Safeguard your data with encryption of signaling and media, and transmission over our private network.
Fax to email
Specify an email address to automatically forward inbound faxes, and wave goodbye to your antiquated fax machine.
Quality routing
Access premium outbound routing with direct connections to Tier-1 faxing partners across our network.
Set your resolution
With our Fax API, you can choose between normal, high or very high quality resolution for your faxes.
Protocol choice
Deliver faxes via T.38 or G.711 pass-through and control T.38 re-INVITE initiator for deep configurability.
High reliability
Ensure your faxes are delivered thanks to automatic error correcting and our multi-cloud network architecture.
BENEFITS
Secure your communications
Send and receive secure faxes wherever you are on our global private IP network.
10
Points of Presence (PoPs) in our global private network
Eliminate errors
Our advanced error correction features ensure your faxes get delivered with confidence.
T.38
Error correction enabled by default
RESOURCES
Start building
Our code is your code.
In-depth API reference
Explore API specifications, webhook payloads and more to build time-saving fax handling applications.
Programmable fax to email
Learn how to send and receive faxes with your email address, powered by the Telnyx Fax API.
Send a fax via API
Send your first API-enabled fax in less than ten minutes, with step-by-step setup instructions.
SOLUTIONS
Your communications powered by our API
I wanted a partner that was API-first and actively investing in continuous product improvement, and that’s what we have in Telnyx.
Matt Herrera
Founder & CEO, Documo
FAQ
Resources, Docs, Support
Fax Api hub
Find tips, best practices, and guides for Fax Api
Programmable Fax Get Started | Telnyx
Telnyx's Programmable Fax service makes it easy to send and receive faxes from your computer or mobile device. With our service, you can easily connect to your fax number from anywhere in the world.
Send a Fax via API | Telnyx
Telnyx offers powerful faxing capabilities through our programmable fax API. In this tutorial, we'll show you how to send a fax using our API. With just a few simple steps, you can have your faxes sent quickly and easily.
Receive a Fax via API | Telnyx
Telnyx's Programmable Fax API makes it easy to receive faxes from anywhere in the world. With just a few lines of code, you can start receiving faxes in your own applications and workflows.
Send a fax API | Telnyx
Send a fax. Files have size limits and page count limit validations. If a file is bigger than 50MB or has more than 350 pages it will fail with
file_size_limit_exceededandpage_count_limit_exceededrespectively.Creates a Fax Application API | Telnyx
Creates a new Fax Application based on the parameters sent in the request. The application name and webhook URL are required. Once created, you can assign phone numbers to your application using the
/phone_numbersendpoint.Retrieve a Fax Application API | Telnyx
Return the details of an existing Fax Application inside the 'data' attribute of the response.
Benefits of Fax APIs—what are they and why do you need them?
The benefits of Fax APIs means fax is as popular as ever. Read on to see how they can help simplify workflows and reduce errors.
Programmable Fax API Secure Faxing Released
Our new Programmable Fax API lets you send and manage fax programmatically, leveraging our private IP network and T.38 support.
How to Debug Communications Webhooks - Easy-To-Use Tools
Use our simple tools to debug your Fax, Voice, and Messaging communications by analyzing webhooks. Watch a live demo today!
HIPAA-Compliance, Fax, and Real-Time Transmission
HIPAA compliant faxes sent over T.38 SIP trunks have encrypted signaling and media, with no data stored on either end.
Programmable fax isn’t going anywhere
While a common perception may be that fax is an antiquated technology that is seldom used, it couldn’t be farther from the truth.
Fax vs email: Which is more secure?
Is fax more secure than email? Fax isn’t without its security concerns. But, when compared to email, here’s why it has a leg up in regards to security.
There’s a reason healthcare providers still use fax
From added security to convenience, there’s reason why hospitals and healthcare providers still use fax machines to transmit important information.
Programmable fax - switch from Twilio to Telnyx
Learn why Telnyx is the perfect Programmable Fax partner to switch to from Twilio, who is disabling fax.
Telnyx Programmable Fax API Video
Our video walk-through shows you everything you need to receive an incoming fax as a PDF using the Telnyx Programmable Fax API.
Telnyx Programmable Fax API Video Guide
Our video walk-through shows you everything you need to send a fax in one API command using the Telnyx Programmable Fax API.
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Configuring Programmable Fax Applications | Telnyx Help Center
Learn how to configure your settings in order to send and receive faxes via API.
Fax API - Error List | Telnyx Help Center
In this article find explanations for both outbound and inbound errors you might experience with Programmable Fax.
Telnyx Fax Configuration & Errors | Telnyx Help Center
How to setup and configure Telnyx FAX and its applications. Learn to how to avoid FAX errors.
Fax service with Telnyx (via T.38 or G711) | Telnyx Help Center
Learn more about setting up fax service with Telnyx using either T.38 or g711.
Telnyx Tech Specs | Telnyx Help Center
Here you will find out key tech specs at Telnyx and what they mean for our service.
Getting Started | Telnyx Help Center
Get Started with a Mission Control Account. Start building on Telnyx today.
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Telnyx healthcare AI offers flexible, HIPAA-compliant voice and messaging AI features. Get connected today.