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Best Online Fax Services 2018

Best Online Fax Services 2018
By , Pamela S. Stevens

Online fax services can save you money and allow you to throw out your old fax machine. Sign up for one of these top three best services.

Credit: ShutterstockCredit: Shutterstock
Online fax services can take the stress and hassle out of sending faxes, especially for government, medical and legal businesses that might have to send faxes frequently. These low-priced services eliminate the need to maintain antiquated fax machines, and they don't tie up phone lines. Many modern online fax services have high levels of security, and some include electronic signature tools as well.

Advantages of online fax over traditional fax:

  • Always on, no busy signal
  • Receive from traditional fax machines
  • Integrate with online file sharing
  • No hardware to maintain
  • Doesn't require ink or toner
  • Sends faxes to traditional fax machines

How We Selected These Online Fax Service

In our search for the best online fax services, we looked for services that offer a comprehensive set of general fax features, such as those listed above. We also reviewed test results from our parent company's testing facilities, Purch Labs, for several online fax services. Tests included sending and receiving faxes via the online platforms, and tracking and evaluating fax transfer times, mobile features and ease of use for the online dashboard.

MORE: Business Phone Services: Best Picks and Buying Guide

Based on our findings from hands-on testing and thorough research, we narrowed the list to three fax services: RingCentralNextiva and Sfax. RingCentral and Nextiva provide popular fax services that work alongside their VoIP business phone systems or as independent products. Sfax is one of the few companies that provide HIPPA-level compliance alongside a business associate agreement (BAA), which helps ensure the privacy of personal health information. All three of these services have a helpful set of features, including the following:

  • Audit trails and reporting
  • Encrypted data transfers
  • Multiple send and receive abilities
  •  Local, toll-free, vanity and ported number options
  • Fax alerts
  • Contact grouping and saving tools
  • Support for a variety of file types


For the most part, fax services charge per page sent and received. For example, you pay a monthly fee and 500 pages are included in the price. However, sometimes there's more to the pricing than meets the eye. Fair usage rules might apply, which would mean that one page is equivalent to one minute of fax time. If your faxes are taking longer to send, you might be charged per minute rather than per page. This is especially true for international faxes.

While most online fax services have a monthly page allotment, some services might designate what pages you can use to send and receive faxes. For example, where some companies would say that you have a monthly allotment of 300 pages each month, other companies might say you have 150 pages to receive and 150 pages to send. Regular service fees are often lower if you pay for a year in advance rather than monthly. You may also see additional charges for features such as vanity numbers, international faxes, additional fax numbers, additional fax service logins, number porting, toll-free lines and pages beyond your monthly allotment.