We compared 7 major fax services head-to-head on price, HIPAA compliance, mobile experience, and reliability. Here is exactly which service wins for each use case — personal, business, healthcare, and high-volume.
Frequently Asked Questions
Which fax service is cheapest in 2026?
MetroFax offers the best pages-per-dollar ratio at ~$9.96/month for 500 pages (US and Canada only). For international users, Fax.Plus starts at $6.99/month annually for 200 pages. If you only fax occasionally, Fax.Plus also offers a permanent free plan with 10 pages.
Which fax service is HIPAA compliant?
mFax Business includes HIPAA compliance on every paid plan with a BAA. eFax requires their $49.99/month Protect plan for HIPAA. Fax.Plus only offers HIPAA compliance at the $99.99/month Enterprise tier. Always request a signed BAA before sending any protected health information.
Can I send a fax from my phone with these services?
Most services have iOS and Android apps — eFax, Fax.Plus, MetroFax, and CocoFax all offer well-rated mobile apps. HelloFax has no native mobile app. [mFax.to](https://mfax.to) excels at mobile faxing through its consumer app, letting you send a fax in under 2 minutes from your phone.
What is the difference between online fax services?
The main differences come down to pricing model (subscription vs. pay-per-fax), HIPAA compliance availability, mobile app quality, international coverage, and integrations with tools like Slack, Dropbox, or Google Workspace. Legacy services like eFax are more expensive but carry enterprise certifications; newer services like Fax.Plus and mFax offer better value for most users.
Is there a free fax service?
Fax.Plus offers a permanent free plan with 10 fax pages — no credit card required. HelloFax provides 5 one-time free pages. Most services offer 14-day free trials. For frequent faxing, a paid plan is more reliable than ad-supported free services. See our [free fax services guide](/blog/best-6-free-fax-services/) for more options.