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The most reliable
cloud fax network

When fax reliability matters, teams trust mFax's unparalleled Tier-1 carrier network.

The last fax service
you will ever need

We built mFax because fax has traditionally... well, sucked. You shouldn't have to cringe when you hear the word fax. Securely and reliably transmit documents from anywhere.

Keep your existing fax number

Easily port-in your existing fax number(s). Need a fax number? That's easy, simply provision one from our interface.

Loaded with advanced features

Best-in-class RESTful API, advanced user management, reporting/audit trails, webhooks, and permissions are available for heavy-duty users.

No fax machine needed

Go fully-digital with our easy-to-use cloud fax service. No more lost paper, wasted time, or missing audit trails.

Intuitive, easy-to-use interface

Send your first fax in seconds. Enterprise-scale features but easy enough for any sized business.

mFax is part of the Documo Suite - A suite of document workflow software built to make documents easy, more secure, and friendly towards our planet.


We love working with amazing companies

Check out some of the industries we serve

The mFax difference


The mFax platform is built with industry-leading security standards. Documents are encrypted at rest and during transport. User authentication, audit trails, and intrusion detection are all built-in features. Learn more about how we protect your data.


mFax’s proprietary fax routing algorithm reduces fax failure rates by up to 80% compared to typical cloud fax providers. Never worry about unnecessary failed faxes again.

Feature packed

Total flexibility to customize your fax deployment. Want the simplicity of sending and receiving from email? No problem. Looking to integrate? Our Fax API is built for just that.

Our users love us

mFax is the highest rated cloud fax solution on Capterra and G2 Crowd. Click on the cards below to see full reviews.

    Carrier or value added reseller?

    Partner with Documo to add reliable online faxing to your product portfolio.


    Several ways to fax

    mFax allows you to fax from any internet-enabled device and even existing physical fax machines.

    Email to fax

    Instantly fax-enable any internet connected device. Send and receive faxes right from your email inbox. There's no additional software to download or install. We will deliver your faxes as PDF attachments.


    Web portal

    Access the web interface from any web browser. Our modern and mobile-friendly web portal allows you to view your fax history, send faxes, and manage your account. Our advanced Admin portal gives you the ability to take full control over your fax solution.


    Fax API

    Our powerful and developer friendly API allows you to integrate and automate fax processes. Get up and running quickly with the ability to scale. Send and receive, get detailed call reporting, and automate user provisioning from our REST API.



    Cloud-enable your MFPs and fax machines. Eliminate the need for POTS lines while maximizing security and control of your fax devices with our reliable HTTPS fax adapters.


    Print to fax

    Our Windows Print to Fax driver allows you to easily send a fax from any Windows application that allows you to print. Simply download and install the driver and fax in 3 easy steps.