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eFax Developer™

The Fax API that Powers Your High-Volume Faxing

Integrate Application Faxing Simply and Cost-Effectively Into Your Business’s CRM or ERP systems.


Move your In-house Fax Processes to the Cloud

Designed for businesses who require integrated fax with high-volume faxing needs, eFax Enterprise API is a secure, XML-based fax API that complements your eFax Corporate® cloud fax service. eFax Enterprise API provides all of the benefits of having your own production-class fax server — but without the hassle, no hardware or expenses of maintaining an on-site fax infrastructure.

The eFax Enterprise online fax API provides:


Integrate Fax Processes — Fax by email right from your CRM, ERP or Electronic Healthcare Systems(EHR) application via our secure Fax API.


Reduce IT Costs — No Fax Maintenance, No Hardware or Software Needed for our fax integration


HITRUST, HIPAA, PCI, GLBA & SOX Compliant- We also sign BAA's.


Increased fax security — with optional TLS 1.2 encryption for fax transmissions, and AES 256-bit encryption for fax storage.


Advanced Auditing — Maintains audit logs for all sent and received fax documents and files with the capability to view up to 20 different tracking and reporting metrics.


Unified with eFax Corporate in order to offer users access to every available feature.

Intelligent Fax Integration

The eFax Enterprise online fax app offers true fax integration.When you deploy our fax integration solution, it’s like having your own production-class fax server in-house — but without the equipment, hassle or expense.


Enhance Your Business’s Fax Compliance

As part of the Consensus® family of cloud service experts, eFax Enterprise API takes advantage of a worldwide, redundant fax and transport infrastructure — and 20 years of experience delivering highly secure solutions that help businesses meet compliance requirements for security, privacy, and auditability set by regulators. The eFax Enterprise API platform integrates easily and can help your organization stay on the right side of federal regulations such as HIPAA, SOX and GLBA.

eFax Enterprise API Datasheet

Integrate Application Faxing Simply and Cost-Effectively Into Your Business’s CRM, ERP, and EHR Systems.

The eFax Enterprise online fax API provides:

Receiving Faxes with eFax Developer


Pages sent to your dedicated, toll-free fax number are passed securely―via Web post―to your application as PDF or TIFF, along with associated “wrapper” information (date/time, number of pages, caller ID, etc.). Your faxes are also available at our secure online-storage site. Plus, bar codes on faxes can be scanned, and their values can be provided with other wrapper data for even more automation.

Sending Faxes with eFax Developer


Your faxes are sent by an SSL-encrypted HTTPS Web post and are delivered immediately. Delivery-status information is then passed back to your application (as a Web post or email). The quick and responsive delivery system can also obtain the status of any fax at any time.

Resources & Knowledge Center to Support Your Business

Frequently Asked Questions


Find answers to our most common questions about online faxing.

Video Tutorials


Watch these videos to discover what cloud faxing can do for your business.

Events & News


Join the eFax Corporate Team at our next Trade Show, Webinar & Special Events

Recorded Webinars


View our informative webinars on internet faxing, fax security and other important topics.

White Papers


Learn more about eFax Corporate and our fax technology.

Customer Case Studies


Learn how our customers are improving their business processes with eFax Corporate.

Speak with a representative now: (888)532-9265.