By David Thompson · Published January 19, 2025 · Updated September 5, 2026 · 7 min read
Quick Answer: Gmail doesn't have a built-in fax feature, but you can send a fax from Gmail using an email-to-fax service like mFax Business. Compose a regular email, address it to the fax number, attach your document, and hit Send — the whole process takes under 2 minutes.
Need to send a fax from Gmail but don't have a fax machine? You're not alone — millions of people use Gmail as their primary email and need to fax documents for work, taxes, or healthcare. The good news: you can send a fax from Gmail without ever leaving your inbox.
Gmail itself doesn't include a fax feature, and Google has never offered one. But with a third-party online fax service, your Gmail account becomes a fully functional fax machine. Below are three methods that work right now in 2026.
The Fastest Way
Open Gmail, compose an email to 15551234567@send.mfax.to (replace with the real fax number), attach your PDF, and hit Send. Every member of an mFax Business organization can do this from the address they sign in with — nothing to configure.
Method 1: Email-to-Fax from Your Gmail Inbox
This is the simplest way to send a fax from Gmail — you compose a regular email and the fax service converts it into a fax transmission. No apps to install, no browser extensions needed.
How It Works
An email-to-fax gateway bridges Gmail and the fax network. You send an email to a special address (the fax number + your provider's domain), and the service:
- Receives your email
- Converts the attachment to fax format
- Dials the recipient's fax machine
- Delivers the document and sends you a confirmation
For a broader look at how email-to-fax works across all major email clients, see our complete guide to faxing from email.
Step-by-Step Instructions
Set Up mFax Business
Visit mFax Business and create your organization, signing in with your Gmail address. That address is authorized automatically — every member of the organization faxes from their own login address, so there is no sender list to configure. To let a colleague fax from Gmail, invite them to the organization.
Compose a New Email in Gmail
Click Compose in Gmail. In the To field, enter the recipient's fax number followed by @send.mfax.to. Use the full number with country code — for example, 15551234567@send.mfax.to for a US number.
Add Your Cover Page (Optional)
The Subject line becomes the cover page subject, and the email body becomes the cover page message. Keep it brief — the recipient sees this as the first page of your fax.
Attach Your Document
Click the paperclip icon and attach your file. PDF works best; Word, Excel, PowerPoint and images (JPG, PNG, HEIC) are converted to fax pages automatically. Up to 60 pages per fax, 20 MB per file.
Hit Send
Click Send like any normal email. The fax service processes your message and dials the number. You'll receive a status email in your Gmail inbox once the fax is delivered or fails, and the fax appears in your organization's history in the mFax app.
Pro Tip
Create a Gmail contact for frequently faxed numbers. Save 15551234567@send.mfax.to as "IRS Fax" or "Doctor's Office Fax" so you can auto-complete the address next time.
Supported File Formats
| Format | Extension | Notes |
|---|---|---|
| Best option — preserves formatting exactly | ||
| Word | .docx, .doc | Converted to PDF automatically |
| Excel | .xlsx, .xls | Tables convert cleanly |
| Images | .jpg, .png, .heic | Good for scanned documents |
| Google Docs | — | Export as PDF first, then attach |
Method 2: Upload from Gmail to a Fax Web App
If you received a document as a Gmail attachment and need to fax it forward, you can download it and upload to a web-based fax portal.
- Open the email with the attachment in Gmail
- Download the attachment (click the download arrow icon)
- Go to mFax.to or open the mFax app on your phone
- Upload the document, enter the fax number, and send
This method gives you access to the full fax dashboard — delivery tracking, custom cover pages, fax history, and contact management. It's the better choice when you need to fax multiple documents or track delivery status closely.
Skip the Download Step
If the attachment is already in Google Drive, you can fax it directly. See our guide to faxing from Google Drive for step-by-step instructions.
Method 3: Gmail Fax Add-ons
Some fax services offer Google Workspace Marketplace add-ons that integrate directly into Gmail's interface. These add a "Send Fax" option inside Gmail without needing to format a special email address.
How to Install
- Open Gmail and click the Get Add-ons button (plus icon in the right sidebar)
- Search for your fax provider in the Google Workspace Marketplace
- Click Install and grant the required permissions
- The add-on appears as a new icon in your Gmail sidebar
When to Use This Method
Add-ons work best for teams that fax frequently and want a more polished experience. They typically offer a built-in cover page editor, contact picker, and delivery status panel — all without leaving Gmail.
Note on Add-ons
Most fax add-ons still require a paid subscription to the underlying fax service. The add-on is just the interface — the fax network access comes from your plan.
Comparing the Three Methods
| Feature | Email-to-Fax | Web App Upload | Gmail Add-on |
|---|---|---|---|
| Setup time | 2 minutes | 2 minutes | 5 minutes |
| Works on mobile Gmail | Yes | Yes (via browser) | Limited |
| Cover page | Subject + body | Custom builder | Built-in editor |
| Delivery tracking | Email confirmation | Full dashboard | Sidebar panel |
| Best for | Quick one-off faxes | Batch sending | Frequent Gmail faxers |
| Cost | Included in plan | Included in plan | Included in plan |
For most people, Method 1 (email-to-fax) is the fastest and simplest. You never leave Gmail and the process feels like sending a normal email.
How to Receive Faxes in Gmail
Sending is only half the story. Most online fax services also let you receive incoming faxes as PDF attachments delivered straight to your Gmail inbox.
Here's how it works:
- Sign up for a fax service that includes a virtual fax number (mFax Business plans include one)
- Set your Gmail address as the delivery destination for incoming faxes
- When someone faxes your number, the document arrives as a PDF attachment in Gmail
You can then search, star, label, and archive faxes like any other email. For a detailed walkthrough, see our guide to receiving faxes by email.
Gmail Fax Tips: Labels, Filters & Templates
Once you're faxing regularly from Gmail, these power-user tips save time.
Create a Gmail Filter for Fax Confirmations
- Open one of your fax status emails, note the sender address, and search Gmail for
from:followed by that address - Click the filter icon and select Create filter
- Choose Apply the label and create a "Fax Confirmations" label
- Check Also apply to matching conversations
Now every delivery receipt is automatically labeled and easy to find.
Use Gmail Templates for Repeat Faxes
If you fax the same number regularly (like a doctor's office or the IRS):
- Enable Templates in Gmail Settings → Advanced
- Compose your fax email with the To address, subject, and body filled in
- Save as a template: More options (⋮) → Templates → Save draft as template
- Next time, load the template and just attach your new document
Organize with Labels
Create labels like "Faxes Sent" and "Faxes Received" to keep your fax correspondence separate from regular email. Combine with filters for automatic sorting.
Is Faxing from Gmail Free?
Gmail itself is free, but the fax service is not. There is no way to send a fax from Gmail for free on an ongoing basis — the fax network requires infrastructure that providers charge for. Faxing straight from Gmail needs an mFax Business plan (from about $9/mo — pages count against your plan's monthly allowance). For a one-off fax you upload yourself, the mFax app is 7 days free, then $7.99/mo.
That said, faxing from Gmail is significantly cheaper than the alternatives:
| Method | Typical Cost per Page |
|---|---|
| UPS Store | $1.89 – $5.99 |
| FedEx Office | $1.89 – $3.49 |
| Staples | $1.89 – $2.49 |
| Online fax service | Well under $1.00 |
Some services offer free trials or a small number of free pages to start. Check our roundup of free fax services for current options. For occasional use, a pay-as-you-go fax plan is the most affordable option.
Is Faxing from Gmail Secure?
Email-to-fax is as secure as your fax provider makes it. The fax itself transmits over the telephone network (PSTN), which is inherently point-to-point. The email leg — from Gmail to the fax gateway — travels over TLS-encrypted connections.
For sensitive documents:
- Choose a provider with TLS encryption for the email-to-fax connection
- Verify the fax number before sending — a misdialed fax goes to the wrong machine
- Use a HIPAA-compliant provider if sending medical records or PHI — the provider must sign a Business Associate Agreement (BAA)
mFax Business plans include encryption, BAA, and audit logging for HIPAA-compliant faxing. If you need to fax sensitive documents, see our guide to fax cover sheet templates — a proper cover sheet adds a confidentiality notice.
Security Reminder
Never put sensitive information (SSNs, patient data, financial details) in the email subject line or body — those become the fax cover page and sit on top of the stack. Put sensitive data only in the attached document.
Send Your First Fax from Gmail
You don't need a fax machine, a phone line, or a trip to the store. Open Gmail, compose an email, attach your document, and send.
Fax from your inbox with mFax Business. Every member of your organization can send a fax from Gmail, Outlook or Apple Mail: address the message to the fax number at send.mfax.to (for example 12125550147@send.mfax.to), attach the document and hit Send. The address you sign in with is already authorized, so there is nothing to configure. See mFax Business — from about $9/mo, build your own plan.
Just need to send one fax? Open the mFax app instead — upload the PDF and send in under 2 minutes. 7 days free, then $7.99/mo.
For more ways to fax from Google products, see our complete guide to faxing from Google or learn how to fax from Outlook if you use multiple email clients.