How to Send a Fax Through Your Email Account

The basic method: email-to-fax gateways

You can send a fax without a fax machine by using an email-to-fax gateway — a service that converts your email into a fax and delivers it to a fax machine on the other end. The process is straightforward: you compose an email, attach the document you want to fax, address it to a special fax number formatted as an email address, and send it. The gateway receives your email, converts the attachment to fax format, and dials the recipient's fax machine.

The recipient sees a standard fax arrive at their machine — they have no idea it came from email. From your side, you avoid buying or maintaining fax hardware, and you keep a record of what you sent in your email inbox. Most gateways charge per fax or offer monthly plans, though some offer a limited number of free faxes each month.

Key Takeaways

• Email-to-fax gateways let you send faxes by addressing an email to a special fax number formatted like an email address, with your document as an attachment.
• The recipient's fax machine receives a normal fax with no indication it came from email, and you keep a copy in your email sent folder.
• Common gateways include services like eFax, Fax.plus, and HelloFax, each with different pricing models and free fax allowances.
• You need the recipient's fax number, the document in a supported format (PDF, Word, or image files work best), and an active email account.
• Fax quality and delivery speed depend on the gateway you choose and the recipient's fax machine, but most deliver within minutes.

Setting up an email-to-fax account

Start by choosing a gateway service. Popular options include eFax, Fax.plus, and HelloFax. Visit the service's website and sign up for an account — you will provide your email address, create a password, and choose a plan. Some services give you a dedicated fax number you can receive faxes at; others focus only on sending. For sending faxes via email, you do not need a dedicated number, so the free or basic tier usually works.

After you sign up, the service will send you instructions on how to format your fax email. This typically means addressing your email to a special address like 1234567890@efax.com (where 1234567890 is the recipient's fax number). Write down or bookmark this format so you have it ready when you need to send a fax. Some services also let you set up your email client to recognize fax addresses automatically, but the basic method works from any email account.

Preparing your document and sending the fax

Convert your document to a format the gateway accepts. PDF is the safest choice — nearly all gateways handle PDFs without trouble. Word documents (.docx or .doc), images (.jpg, .png), and Excel files also work with most services, though results vary. If you have a paper document, scan it to PDF first using your phone's camera app or a scanner, then save it to your computer.

Open your email and compose a new message. In the "To" field, enter the fax address in the format your gateway provided — for example, +1-555-123-4567@fax.plus.com. The subject line and body text are optional; some gateways ignore them, while others include them on the fax cover page. Attach your document by clicking the attachment button and selecting the file from your computer. Double-check the fax number in the recipient field — a single digit wrong sends your fax to the wrong machine. Then send the email as you normally would.

What happens after you send

The gateway receives your email within seconds and begins converting your attachment to fax format. This usually takes one to five minutes. The service then dials the recipient's fax number and transmits the document. Most gateways send you a confirmation email within a few minutes telling you whether the fax went through or failed. If it failed, the confirmation will usually say why — for example, the line was busy, the fax machine was offline, or the number was invalid.

The recipient's fax machine prints the document as it would any other incoming fax. They see a standard fax with no indication it originated from email. Your copy stays in your email sent folder, giving you a record of what you sent and when. This is one advantage over traditional fax machines, which often do not keep detailed records.

Choosing between paid and free options

Most gateways offer a free tier with limits. eFax and Fax.plus typically allow two to five free faxes per month; HelloFax offers a free plan with one fax per day. If you send faxes rarely — a few times a year — the free tier may be all you need. If you send more than five or ten per month, a paid plan usually costs between $10 and $30 monthly and includes unlimited sending.

Compare services by the number of free faxes they offer, the price of their paid plans, and whether they charge per page or per fax. Some services charge extra for international faxes or faxes to certain regions. Read the fine print on the service's website before signing up, because limits and pricing change. A service that is free today might reduce its free allowance next month.

Common problems and how to fix them

If your fax fails to send, the confirmation email will usually tell you the reason. A busy signal means the recipient's fax line was in use — wait a few minutes and try again. An invalid number means you typed the fax number wrong; double-check it against the original source and resend. If the fax machine was offline or out of paper, the recipient needs to fix their equipment before you can resend.

If the recipient says they did not receive the fax, ask them to check their fax machine's activity log — most machines keep a record of incoming faxes. If the log shows nothing, the fax did not arrive. Check your confirmation email to see whether the gateway reported success or failure. If the gateway said it succeeded but the machine has no record, contact the gateway's support team with your confirmation number and the recipient's fax number; they can investigate whether the fax was actually delivered.

If your document arrives with poor quality — blurry, cut off, or with missing pages — the problem is usually the source file. Rescan paper documents at a higher resolution (300 dpi or higher), or convert digital documents to PDF before sending. If the problem persists, try a different gateway, as some handle image quality better than others.

Alternatives if email-to-fax does not work

If you need to send a fax but do not want to sign up for a gateway service, some options exist. Many UPS stores and FedEx locations have fax machines and will send a fax for you for a small fee — usually $2 to $5 per page. Libraries often offer fax services to the public at no cost or for a small donation. If you have a smartphone, some fax apps like Adobe Scan or Microsoft Lens let you photograph a document and send it as a fax through their built-in services, though these typically charge per fax or require a subscription.

If you receive faxes regularly, a dedicated fax service like eFax or Fax.plus that gives you an incoming fax number might be worth the cost. These services receive faxes and deliver them to your email as PDF attachments, so you never need a physical fax machine. The cost is usually $10 to $20 per month for both sending and receiving.

Frequently Asked Questions

Do I need to own a fax machine to send a fax via email?

No. Email-to-fax gateways convert your email into a fax and send it to the recipient's fax machine. The recipient sees a normal fax; you never need hardware on your end.

What file types can I attach to a fax email?

PDF, Word documents, images (JPG, PNG), and Excel files work with most gateways. PDF is the most reliable. Avoid sending text files (.txt) or unusual formats — convert them to PDF first if the gateway does not accept them.

How long does it take for a fax to arrive after I send the email?

Usually one to five minutes from the time you send the email. The gateway converts your attachment, dials the recipient's fax machine, and transmits the document. You will receive a confirmation email telling you whether it succeeded.

Can I send a fax to an international number?

Yes, but some gateways charge extra for international faxes or do not support certain countries. Check your gateway's website before sending. International faxes may also take longer to deliver because they travel through more phone lines.

What if the fax number I am sending to is wrong?

The gateway will attempt to dial the number you provided. If the number is invalid or disconnected, the confirmation email will report a failure. Always verify the fax number against the original source before sending, especially for important documents.