By Alexey Spasskiy · Published February 15, 2026 · Updated June 8, 2026 · 11 min read
Quick Answer: Send a fax from email for free using Fax.Plus (10 free pages/month, no credit card, 180+ countries) or FaxZero (5 faxes/day, no account needed, US/Canada). Address an email to
[faxnumber]@fax.plus, attach a PDF, and send. The provider's gateway delivers it to any fax machine.
Sending a fax from email used to require dedicated enterprise telecom hardware. Today, email-to-fax free gateways let you deliver documents to any fax machine in the world from your existing Gmail or Outlook inbox — no hardware, no monthly fees, no fax machine required.
Email-to-fax works by routing your message through a provider's SMTP gateway. The gateway converts your attachment to fax format and transmits it over the public telephone network. The recipient's machine receives it exactly like any other incoming fax. You get a delivery confirmation email when it goes through.
The catch: most "free" email-to-fax services have page limits, geographic restrictions, or require an account. We tested seven of the most popular options and ranked them so you know exactly what you're getting before you commit.
Our Top Pick
Fax.Plus is the best free email-to-fax service for most users: 10 pages/month permanently, no credit card, works in 180+ countries. For instant no-account sending to US and Canada, FaxZero is the fastest option.
Quick Comparison: Free Email-to-Fax Services
| Service | Free Limit | No Account | Receiving | International | Best For |
|---|---|---|---|---|---|
| Fax.Plus | 10 pages/month | No | Sending only | 180+ countries | Best overall |
| FaxZero | 5 faxes/day × 3 pages | Yes | No | US & Canada only | No-signup faxes |
| GotFreeFax | 2 faxes/day × 3 pages | Yes | No | US & Canada only | Anonymous sending |
| CocoFax | 10 pages (one-time) | No | Paid only | Limited | HIPAA-ready trial |
| FaxBurner | 5 pages sending | No | 25 pages/month | US only | Free inbound receiving |
| mFax.to | Free trial | No | Yes | Yes | Full-featured faxing |
How Email-to-Fax Works
Email-to-fax is the bridge between the modern internet and the decades-old telephone network. Understanding the pipeline helps you choose the right service and troubleshoot delivery failures.
When you send an email to a fax number, here is what happens behind the scenes:
- You compose an email to a gateway address:
[recipient-fax-number]@[provider-domain].com - You attach your document (PDF, DOCX, JPG, TIFF)
- The provider's SMTP server receives your email
- The gateway converts the attachment to TIFF format, optimized for fax transmission
- The gateway dials the recipient's fax number over the PSTN (public telephone network) using the T.38 protocol — the international standard for fax over IP
- The recipient's machine prints the pages; you receive a delivery confirmation
The quality of this pipeline varies considerably between services. Carrier-grade gateways deliver clean transmissions at 98%+ success rates. Free consumer-tier gateways sometimes use lower-grade SIP trunks, which can cause failed transmissions or blurry images.
Supported File Types
Most email-to-fax services accept PDF, DOC/DOCX, JPG, PNG, and TIFF. PDF is the most reliable format — it preserves layout, fonts, and margins exactly as intended. If you're starting from a Word document or image, convert it first using the free mFax.to document converter.
The 6 Best Free Email-to-Fax Services
1. Fax.Plus — Best Overall
Fax.Plus
Fax.Plus stands apart from other email-to-fax free services for one reason: the free tier is genuinely permanent. You get 10 pages per month, every month, at no cost — not a trial, not a lifetime cap. It also works internationally, which rules out most of the competition.
The Fax.Plus Gmail add-in lets you send directly from your inbox. Install it from the Google Workspace Marketplace, then address your email to +1XXXXXXXXXX@fax.plus with your PDF attached. You can also use it from Outlook with the Microsoft 365 add-in. How to use: Sign up at fax.plus with your Google or Microsoft account, then send from any email client to [country code][fax number]@fax.plus.
Pros
- 10 pages per month permanently — not a one-time trial
- Works in 180+ countries on the free tier
- Native Gmail and Outlook add-ins available
- No credit card required — email or Google sign-in only
- Delivery confirmation with status reports
Cons
- Account required (email, Google, or Microsoft sign-in)
- Receiving requires a paid plan
- 10 pages/month is too low for regular business use
2. FaxZero — Best for Quick No-Account Faxes
FaxZero
FaxZero is the simplest free fax option: go to faxzero.com, enter the recipient's fax number, upload a document, and send. No account. No credit card. Up to 5 faxes per day to US and Canadian numbers, with the daily limit resetting at midnight.
One important note: FaxZero is a web form, not a true email-to-fax gateway. You can't send to a FaxZero address from Gmail. If pure inbox-based email-to-fax is your requirement, use Fax.Plus or GotFreeFax instead. For more on the service, see our FaxZero review.
Pros
- Zero account required — just a web form
- 5 faxes per day (3 pages each) — limit resets daily
- No credit card, no signup, no strings attached
- Adds a branded cover page (minimal intrusion)
Cons
- US and Canada only — no international numbers
- Not a true email gateway — uses a web form, not inbox addressing
- No receiving capability at any tier
- Free cover page includes FaxZero branding
3. GotFreeFax — Best No-Account Email Sending
GotFreeFax
GotFreeFax offers the most anonymous free fax experience: two faxes per day to US and Canadian numbers, no account required, and no branding on the fax itself. The daily limit is stricter than FaxZero, and you don't get delivery confirmation without creating a free account. For truly occasional, low-stakes faxes, it works reliably. For anything time-sensitive, use a service that confirms delivery. You can read a full breakdown in our GotFreeFax review.
Pros
- No account, no sign-in — completely anonymous
- No cover page or branding added to the fax
- Free for US and Canada numbers
Cons
- Only 2 faxes per day (3 pages each)
- US and Canada only — no international support
- No delivery confirmation on free tier
- Web interface includes third-party advertising
4. CocoFax — Best HIPAA-Ready Free Trial
CocoFax
CocoFax's 10-page allowance is a one-time lifetime limit — not a monthly reset. You send 10 pages total and then the free tier is exhausted. That said, it's one of the few services that offers HIPAA-ready compliance at a low price point ($4.99/month paid tier). For healthcare users who need to test before committing, the 10 free pages are useful. For general ongoing use, you'll exhaust the allowance within a single faxing session.
Pros
- 10 free pages, no credit card
- Claims HIPAA compliance even at entry-level paid tiers
- Clean, modern interface with email gateway support
- Paid plans start at just $4.99/month
Cons
- 10 pages is a one-time lifetime cap (not monthly)
- Receiving requires a paid subscription
- Geographic coverage limited on free tier
- Low daily sending limits
5. FaxBurner — Best for Free Fax Receiving by Email
FaxBurner
FaxBurner flips the formula: it is the best option if you need to receive faxes by email for free rather than send them. The free tier gives you a temporary US fax number and 25 inbound pages per month, delivered to your inbox as PDF attachments. The 5-page lifetime sending allowance is thin. If your primary need is receiving faxes from healthcare providers, insurance companies, or legal services and having them land automatically in your email, FaxBurner delivers without cost.
Pros
- 25 inbound pages per month free — renews monthly
- Faxes delivered to your email inbox as PDF attachments
- Mobile app for iOS and Android
- Easy setup with temporary fax number
Cons
- Free sending is only 5 pages lifetime (not monthly)
- Temporary fax number resets every 24 hours on free tier
- US numbers only
- Not HIPAA compliant on any plan tier
6. mFax.to — Best Full-Featured Alternative
mFax.to
mFax.to is not an email-to-fax gateway in the traditional sense — it is a dedicated fax platform with a mobile app and web dashboard. But if your real goal is to send a fax without a fax machine and get reliable, confirmed delivery, mFax.to outperforms email gateways on every practical dimension: delivery rate, speed, receiving capability, and ease of use. Upload a PDF or snap a photo of a document with your phone, enter the fax number, and send. Try mFax.to free — no credit card required, under 2 minutes to your first fax.
Pros
- Free trial, no credit card required
- Send and receive — not just outbound
- iOS, Android, and web browser — full cross-platform
- 98% delivery success rate with confirmed receipts
- 5 million+ users; 4.8-star App Store rating
Cons
- Not a traditional email gateway — uses app or web interface
- Subscription required after the free trial period
How to Send a Fax from Email: Step-by-Step
The exact process varies by service, but the core workflow is the same for any true email-to-fax gateway.
Choose a service and create an account
For no-account sending to US/Canada, go directly to faxzero.com or gotfreefax.com. For inbox-based email gateway sending, sign up at Fax.Plus — it takes 30 seconds using your Google or Microsoft account. You'll get 10 free pages per month.
Prepare your document as a PDF
PDF gives the most reliable fax transmission — it preserves layout, fonts, and signature lines exactly. If you're starting from a Word document or image, use the free mFax.to document converter. Keep total file size under 20 MB.
Address the email to the recipient's fax number
Format the To: field using the provider's gateway domain. For Fax.Plus: +1XXXXXXXXXX@fax.plus (always use international format with country code). The subject line may appear as the cover page subject on some services.
Attach the document and send
Attach your PDF (or other supported file). Double-check the fax number in the address — a single wrong digit means a failed delivery or a fax landing at the wrong number. Click Send from your regular Gmail or Outlook inbox.
Wait for the delivery confirmation
Most services send a confirmation email when the fax goes through. If you receive a failure notice, verify the fax number format, confirm the recipient's line is active, and resend. Busy signals are common — quality gateways retry automatically.
Most Common Mistake
Always include the country code. For a US number, use +12025551234@fax.plus — not 2025551234@fax.plus. Missing the country code is the single most frequent reason email-to-fax delivery fails.
Sending from Gmail: Two Methods
Gmail has no native fax support, but two approaches work well with Fax.Plus.
Method A — Direct gateway addressing:
Compose a new email in Gmail. In the To: field, enter +1XXXXXXXXXX@fax.plus. Attach your PDF. Click Send. No add-ins, no configuration — the email is routed through Fax.Plus's gateway and delivered as a fax.
Method B — Fax.Plus Gmail add-in: Install the Fax.Plus add-in from the Google Workspace Marketplace. It adds a dedicated "Send Fax" button inside Gmail's compose window, with a structured interface for the fax number, cover page, and attachments. This is the cleaner option if you fax regularly. For a step-by-step walkthrough, see our dedicated guide to sending a fax from Gmail.
Both methods draw from your Fax.Plus free allocation of 10 pages per month. For a broader guide covering all methods for inbox-based faxing, see our complete how to fax from email guide.
Choosing the Right Service for Your Situation
| Your Situation | Best Option |
|---|---|
| One-off fax, US/Canada, zero signup | FaxZero |
| Regular faxing with international coverage | Fax.Plus |
| Completely anonymous, no account | GotFreeFax |
| Receive faxes to inbox for free | FaxBurner |
| Testing before HIPAA-ready deployment | CocoFax |
| Mobile-first, reliable delivery, send + receive | mFax.to |
| Business teams or healthcare use | mFax Business |
Four questions that narrow the field:
- Sending or receiving? Most free tiers cover outbound only. FaxBurner is the best free option for inbound. For a full send-and-receive solution at no upfront cost, mFax.to's free trial is the strongest option.
- US/Canada or international? FaxZero, GotFreeFax, and FaxBurner are North America only. Fax.Plus covers 180+ countries on the free tier.
- One-time or recurring? FaxZero resets daily. CocoFax's 10 pages are a lifetime cap. Fax.Plus resets monthly — it is the only option with a genuinely ongoing free sending allowance.
- How sensitive is the document? Free email-to-fax services are not HIPAA compliant. Medical records and PHI require a paid service with a signed BAA.
For a deeper look at the free fax landscape beyond email gateways, see our roundups of best free online fax services and free internet fax options.
Limitations of Free Email-to-Fax Services
Free Doesn't Always Mean No Limits
Every free email-to-fax service has hard restrictions. CocoFax's 10 pages are a lifetime cap — use them once and the free tier is gone. FaxZero's 5-fax daily limit is strict. Fax.Plus's 10 monthly pages won't support regular business faxing.
Five limitations to plan around:
-
Page caps — The most obvious constraint. Once exhausted, you wait for the reset or upgrade. Know whether the cap is daily, monthly, or a one-time lifetime limit before you rely on a service.
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Geographic restrictions — Most free tiers cover only the US and Canada. Sending to a German or Australian fax number? Fax.Plus is the only free-tier service that works internationally.
-
No receiving — Free tiers are almost always send-only. A fax number for receiving requires a paid plan on most platforms. FaxBurner is the exception for US numbers.
-
Image quality — Free gateways sometimes compress TIFF output more aggressively than paid tiers. For documents with small print, tables, or signature lines, test with a sample fax before sending anything critical.
-
No HIPAA compliance — Sending protected health information through a free consumer gateway violates HIPAA. For medical records, insurance claims, or any document containing PHI, use a paid service that provides a Business Associate Agreement. See our guide to HIPAA-compliant fax services.
Why mFax Beats Email Gateways for Most Use Cases
Email-to-fax gateways have a clear niche: occasional, low-stakes faxes to US numbers when you have zero budget and minimal volume. Outside that narrow window, a dedicated fax app delivers better results on every dimension.
Where mFax.to wins:
- Confirmed delivery — see exactly when and whether the fax was received, not just "sent"
- Send and receive — get a real fax number, not just outbound access
- Mobile-native — snap a document with your phone's camera and fax it directly from the mFax app
- 98% delivery rate — carrier-grade infrastructure, not consumer-tier SIP trunks
- International — no geographic restrictions, unlike most free alternatives
For personal use: Download the mFax app — free trial, no credit card required. Upload a PDF or scan a document, enter the fax number, and send in under 2 minutes.
For business teams: mFax Business adds HIPAA compliance, virtual fax numbers, team accounts, and audit logging — starting at about $9/mo (billed annually). Unlike the rigid free tiers above, you build your own plan with a live calculator, choosing the exact seats and pages you need ($3/seat + $4 per 100 pages) and paying only for what you use.
Over 5 million users have sent faxes with mFax.to. It is the fastest path from document to delivered fax, whether you're at a desk or on the go.
Frequently Asked Questions
See the FAQ section above the article for quick answers to the five most common questions about free email-to-fax sending. For related topics:
- How the fax vs email comparison plays out for business workflows
- How to receive fax by email with a permanent fax number
- Our free fax app roundup for mobile-focused alternatives