7 Best Free Online Fax Services in 2026

"Free online fax" is one of those search terms that promises a lot and often delivers disappointment. Most services advertise as free but hit you with limits — page caps, forced cover pages with ads, or trial periods that auto-convert to paid plans.

We signed up for over a dozen services and actually sent faxes with each one. Here's what we found — the genuinely free options, the almost-free ones, and the ones to avoid.

Quick Comparison

1. Fax.Plus — Best Overall Free Option

Fax.Plus gives you 10 free pages when you sign up — no credit card, no auto-renewals. The interface is clean, the app works on both iOS and Android, and faxes are delivered to over 180 countries.

The catch? Those 10 pages don't renew. Once they're gone, you're on a paid plan ($5.99/month for 100 pages). But for a one-time fax, it's the easiest no-strings option.

• Pros: No credit card needed, clean UI, reliable delivery
• Cons: 10-page lifetime limit, no free receiving

2. FaxZero — Best for US Domestic Fax

FaxZero lets you send up to 5 faxes per day to US and Canadian numbers — completely free, forever. The trade-off is a branded cover page with FaxZero advertising, and a 3-page limit per fax (plus cover).

• Pros: Truly free recurring use, no account needed
• Cons: US/Canada only, ad-branded cover page, 3-page limit

3. HelloFax (Dropbox Fax) — Best for Dropbox Users

HelloFax — now integrated into Dropbox — gives 5 free pages upon signup. The integration with Dropbox is seamless: you can fax files directly from your cloud storage.

• Pros: Dropbox integration, clean interface
• Cons: Only 5 free pages total, paid plans start at $9.99/mo

4. CocoFax — Best Trial for Send + Receive

CocoFax's free trial gives you 10 pages and — uniquely — includes receiving capability. You get a temporary fax number during the trial. The Google Workspace integration is a nice touch for business users.

• Pros: Send and receive in trial, Google Workspace integration
• Cons: Credit card required, auto-renews if you forget to cancel

5. iFax — Best Mobile Experience

iFax offers a 7-day free trial with full functionality. The mobile app is exceptionally well-designed — the camera scan feature lets you photograph a document and fax it in under a minute.

• Pros: Excellent mobile app, camera scan feature, e-signatures
• Cons: Credit card required for trial, $16.67/mo after trial

6. GotFreeFax — Simplest No-Signup Option

No account, no registration, no app. Just go to the website, upload a file, enter the fax number, and send. Limited to 2 faxes per day and 3 pages per fax, with a branded cover page.

• Pros: Zero friction, daily limit resets
• Cons: Very basic, ad cover page, US/Canada only

7. eFax — Best Full-Featured Trial

eFax's 30-day trial gives you a real fax number with full send and receive capability. It's the most feature-complete trial on this list. The downside: it's also the most expensive if you forget to cancel ($18.99/mo).

• Pros: Full-featured 30-day trial, dedicated fax number
• Cons: Must cancel manually, expensive post-trial

Most free fax services work well for occasional use — the key differences are in page limits and hidden requirements.

How to Choose

Your best choice depends on your situation:

• One-time fax? → Fax.Plus (10 pages, no strings)
• Recurring US faxes? → FaxZero (5/day, forever free)
• Need to receive? → CocoFax or eFax trial
• Faxing from phone? → iFax trial

For a more detailed breakdown of paid plans and features, the team at FaxRadar has a comprehensive comparison of free fax services that's worth checking if you want to see how free tiers stack up against entry-level paid plans.