How it was ranked:10 SaaS products compared. Each verdict is below.
eFax is the best online fax service for most businesses because it covers solo users through to enterprises, with a BAA on its Business and Corporate plans and HITRUST certification at the top tier. Fax.Plus is the best value, with a free plan and paid plans from $6.99 a month billed annually. Documo suits healthcare practices that want HIPAA on every plan, and WestFax includes a signed BAA on its $14.99 entry plan.
Top 10 Online Fax Services, compared
RANK
ENTRY
BEST FOR
SCORE
FROM
1
eFaxeFax says its Business, Corporate and Unite products carry BAA coverage, and that eFax Corporate is HITRUST certified.
Businesses wanting one provider as they grow
96.6
$18.99/month, or $15.83/month billed annually
2
Fax.PlusFax.Plus lists ISO 27001 and SOC 2 Type II among its compliance credentials, and its Business plan includes five members and 1,000 pages a month.
Small teams wanting low-cost online fax
95.3
Free plan; paid from $6.99/month billed annually
3
DocumoDocumo says it holds SOC 2 Type II certification and HITRUST e1 certification for its service hosted on Google Cloud.
Healthcare practices needing HIPAA cloud fax
94.0
$25/month billed annually
4
iFaxiFax says it has more than 5 million customers and has sent over 20 million faxes.
Mobile users and developers building fax into apps
92.7
$12.49/month (send only)
5
RingCentral FaxRingCentral offers new fax subscribers a 7-day free trial, limited to five users.
Teams already using RingCentral phones
91.4
$22.99 per user/month billed annually
6
WestFaxWestFax names McKesson, Cardinal Health and CVS Caremark among the healthcare organisations that use it.
Small healthcare offices needing a signed BAA
90.1
$14.99/month
7
Concord TechnologiesConcord displays HITRUST CSF certification on its website and reports a 99% customer retention rate.
Hospitals and health plans faxing at volume
88.8
Custom
8
FaxageThe Faxage Lite plan costs $3.49 a month plus 5 cents a minute, and every account includes unlimited users at no extra cost.
Low-volume senders watching costs
87.5
$3.49/month plus usage
9
Nextiva vFAXFailed faxes do not count toward vFAX page allowances, and extra pages cost 3 cents each.
Offices sending up to 1,000 pages monthly
86.2
$7.95/month billed annually
10
Dropbox FaxThe free plan includes 5 pages, after which sending costs $0.99 per fax for up to 10 pages.
eFax is the online fax brand of Consensus Cloud Solutions, which also owns MyFax and SRFax, and says it has made faxing simple for over 20 years. Its Personal plan includes 200 pages a month, the Business plan adds five users and a BAA, and eFax Corporate serves large organisations on custom terms.
From $18.99/month, or $15.83/month billed annually
Fax.Plus is made by Alohi, based in Geneva, Switzerland, and offers web, mobile and email-to-fax on plans that run from a free tier to Enterprise. HIPAA compliance with a BAA is limited to the Enterprise plan, which starts at $79.99 a month billed annually and includes 4,000 pages.
Documo, incorporated in 2017, sells cloud fax alongside e-signature and document processing, and in 2025 brought its mFax, mSign and mDrive products together under the Documo name. HIPAA compliance comes standard on every plan, and Documo says it signs a BAA for healthcare customers.
iFax, operated by Amplify Ventures, launched its first mobile fax app in 2008 and now runs on web, desktop, iOS and Android, with a fax API for developers. HIPAA compliance starts on the Plus plan at $24.99 a month, which also adds a fax number for receiving.
From $12.49/month (send only)
PROS
HIPAA compliance from the Plus plan
Apps on every major platform
CONS
Basic plan cannot receive faxes
BAA terms not shown on pricing page
Best for
Mobile users and developers building fax into apps
RingCentral sells online fax two ways: a fax-only Fax 3000 plan with 3,000 pages per user each month, and as part of its RingEX business phone plans. RingCentral says the service supports HIPAA compliance and that it makes a BAA available to paying covered-entity customers.
WestFax was founded in 1999 in Denver, is privately held and works only on fax as an FCC-licensed carrier. Every plan, including the Solo plan with 500 pages a month, is HIPAA compliant with a signed BAA.
Concord Technologies, based in Seattle, sells cloud fax and healthcare document automation through its Concord Connect platform, which takes in fax, email and secure file transfer and uses AI to extract data. It names Wellmark Blue Cross Blue Shield and Oceans Healthcare among its customers.
Faxage is run by EC Data Systems, a software company in Denver, Colorado, and has offered online fax since 2004 on its own infrastructure. It offers a BAA on request and does not require a special plan or extra fee for HIPAA security features.
vFAX is the online fax service of Nextiva, the US business phone and customer experience company, and works by email and a web portal. The Essential plan includes 500 shared inbound and outbound pages a month, and a HIPAA-compliant plan is sold by quote.
Dropbox Fax, formerly HelloFax, is part of the Dropbox Sign product family and lets users fax from the browser or by email, pulling files from Google Drive, Dropbox, Box and OneDrive. HIPAA and SOC 2 features sit on its corporate tier, which is sold through sales.
Free plan; paid from $8.33/month billed annually
PROS
Free plan for occasional sending
Connects to major cloud storage
CONS
Receiving needs a paid plan
HIPAA only on the corporate tier
Best for
Occasional senders who use cloud storage
Where it falls short
Receiving needs a paid plan.
84.9
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Ask us for a quote for one, two or three years. Nothing recurring.
Most online fax plans cost about $7 to $40 a month. Fax.Plus starts at $6.99 a month billed annually and Nextiva vFAX at $7.95, while eFax Personal is $18.99 a month. Plans that include a BAA usually cost more, such as eFax Business at $39.99 a month.
How do I choose an online fax service?
Start with your monthly page volume, the number of users and whether you handle health or financial records that need a BAA. Compare overage rates too, which run from 3 cents a page on Nextiva vFAX to 10 cents on eFax Personal. Teams already on a business phone system should check RingCentral Fax or Nextiva vFAX first.
What is the best online fax service for small business?
Fax.Plus suits most small businesses, with a free plan, a $6.99 entry plan billed annually and a five-member Business plan. Small healthcare offices should look at WestFax, which includes a signed BAA on its $14.99 Solo plan, or Documo, which includes HIPAA compliance on every plan.
Is online fax better than a fax machine?
For most offices, yes: online fax removes the dedicated phone line, paper and toner, and lets staff send and receive faxes from email, a browser or a phone. Services such as eFax and iFax deliver faxes as PDFs to an inbox instead of leaving pages on a shared machine. Email-to-fax is one feature of these services, not a separate product, so you still need a fax number and plan.
Which online fax services are HIPAA compliant?
WestFax and Documo include HIPAA compliance on every plan and sign a BAA. eFax offers a BAA on its Business and Corporate plans, Fax.Plus only on Enterprise, and Concord Technologies serves larger healthcare organisations with HITRUST CSF certification. A service is only suitable for patient records once a signed BAA is in place.
