How to Send a Fax From Email — Complete Guide
Email-to-fax lets you send faxes using the email client you already use — no special apps or hardware needed. Here's how it works with Gmail, Outlook, Yahoo, and more.
Works with any email provider, including Gmail and Outlook
How Email-to-Fax Works
Email-to-fax services bridge your email and the fax network. When you compose an email with a fax number as the recipient, the service converts your attachment into a fax and transmits it over phone lines.
Register for a Fax Service
Sign up for a free Fax.plus account and verify your email address.
Compose Your Email
To: [fax-number]@fax.plus. Attach your PDF or document. Add a subject line for the cover page.
Send & Track
Send the email normally. You'll receive a delivery receipt in your inbox confirming the fax was delivered.
Supported Email Providers
Email-to-fax works with virtually any email client:
- Gmail — Works natively, plus dedicated add-on available
- Outlook / Microsoft 365 — Full support via email-to-fax and add-in
- Yahoo Mail — Works via standard email-to-fax format
- Apple Mail — Compose and send as normal email
- ProtonMail — Works, though attachments must be unencrypted
Email-to-Fax Comparison
| Service | Email-to-Fax | Supported Providers | Price | Rating |
|---|---|---|---|---|
| Fax.plus ⭐ | ✓ | All providers | From $6.99/mo | 9.4/10 |
| eFax | ✓ | All providers | $18.99/mo | 7.5/10 |
| RingCentral Fax | ✓ | All providers | $15.99/mo | 7.2/10 |
FAQ
Yes. The same email-to-fax method works with Outlook, Microsoft 365, and Outlook.com. Fax.plus also offers an Outlook add-in for a native experience.
Yes, when using a reputable service. Fax.plus encrypts all transmissions with TLS and stores documents in encrypted cloud storage. However, standard email is not encrypted end-to-end, so avoid sending highly sensitive data via unencrypted email.
Most services support PDF, Word (.doc/.docx), images (JPG, PNG, TIFF), Excel, and plain text. Fax.plus supports 20+ formats.