InterFax : Online Fax Sites Review

Company Overview:

InterFax is a technology provider that has been at the forefront of communications technology since 1996. Beginning life before the .com boom, InterFax has experience on fax-on-demand, fax broadcasting and broke into online faxing in 1999. With tens of thousands of customers, the international provider transmits more than 60 million faxes through their software every year. Catering to prestigious high-volume clients including Microsoft, Amazon, Subway and Nokia; InterFax is a dynamic and powerful service available around the world.

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InterFax has had a history long enough to allow them to form an impressive list of features.

  • Multiple Application Support

    InterFax integrates with a number of programs including Outlook, Gmail, Hotmail, Microsoft Office, Google Docs etc. It also supports a number of different document types including PDF, HTML and TXT.

  • Easy Management of Lists

    InterFax caters for an unlimited amount of lists, with up to 20,000 recipients included within each list – all lists can be shared between accounts and users.

  • Backup Protection

    Failed faxes can be re-routed to alternative fax machines and all images are stored online for seven days. Redistribution is available and re-sending can be enacted with the click of a button.

  • Enterprise Systems

    Users can be established within accounts. Multiple administrators can be assigned and every individual user is given their own login details.

  • Free API

    Integrate InterFax with a number of programs, applications and in-house systems. REST and SOAP-based interfaces & PCI-DSS Level 1 compatible.

  • Privacy

    All images can be set to delete after outbound faxes have successfully been delivered. InterFax has ‘Privacy Mark’ compliance and confirms with HIPAA.

  • Analytics

    All user activity is reported at defined periods – available in HTML, CSV and XML.

Security Features:

InterFax is one of the best performers in security and privacy, out of all online faxing providers. Files stored online for faxes can be configured to delete after use, whilst InterFax adhered to both Privacy Mark guidelines and HIPAA rules. Alongside this, InterFax is also PCI DSS compliant, with encryption on both incoming and outgoing faxes. Public key signature is available across all faxes, whilst private key signature applies to outbound faxes.

Online Fax Plans:

InterFax has had longstanding success with a very simplistic and straightforward fax planning system. Operating through individual Send and Receive plans, prepaid packages are available across six tiers (91 pages, 500 pages, 1136 pages, 3182 pages, 7273 pages & 32727 pages.) Receiving faxes works on a single set-up fee and the price varies on area code – toll free numbers receive 200 pages for free and other numbers receive 500 for free. All types of plan come with the full InterFax feature list.

Other types of online faxing plans are available across Enterprise, Baan, SAP, Automation and Broadcasting systems.


Across the six tiers of sending faxes, prices begin at $10 for 91 pages and rise to $2000 for 32727 pages. The cost to fax single pages decreases as the volume increasing, meaning that those on the highest level plan will save 44% when compared to the lowest tier. Toll Free Numbers for receiving faxes come with a $12.95 setup fee and costs $12.95 per month for 200 pages with overage charges of $0.15. Regional numbers cost $9.50 to setup and costs $9.50 per month, for 500 pages and $0.05 overage charge.

When sending faxes, there are no overage charges as faxes are bought on a per-credit basis. When the credits run out, users can purchase another pre-paid plan.

Name of PlanMonthly RateNumber of Free Fax PagesFee per Fax Page over monthly limit

Ease of Use:

InterFax’s myriad of solutions makes it an incredibly useful tool across all ranges of abilities, needs and specifications. Integration with almost all e-mail clients and applications makes faxing an incredibly simple process, whilst API allows coders to bring InterFax into in-house systems and interfaces. The analytics and reporting suite is outstanding, giving customers an insight into their campaigns and allowing them to educate themselves on how to fax smarter. With almost 20 years of history, InterFax has made its software smoother and smoother every year.

Customer Support:

The InterFax Help page is well stocked with information, across guides, articles and FAQs. Documents, Guides and Walkthroughs help users understand the software and a Discussion Forum is active for community assistance. Getting in touch with InterFax is as simple as sending an e-mail to the appropriate address or calling a telephone number. With offices across three continents, InterFax support a number of languages and have friendly, informative on staff to deal with any and all problems. A 7 Day Free Trial is available for all plans.

Bottom Line:

InterFax certainly deserves the prestige it holds in the online faxing industry. It offers one of the most in-depth reporting suites and most flexible pieces of software – mainly for the more demanding corporations but the pricing system is attractive to all requirements.

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