Yes, you can send a fax through email using a fax-to-email service
You do not need a fax machine or a phone line to send a fax. Instead, you can use an online fax service that converts your email into a fax transmission. You attach a document to an email, send it to a special fax number address provided by the service, and the recipient receives it as a traditional fax on their machine or computer.
The process works because fax-to-email services act as a bridge between email and the fax network. When you send an email to a fax address (which looks like a phone number with a domain, such as 5551234567@faxservice.com), the service converts your message and attachment into a fax signal and transmits it to the recipient's fax number. The recipient sees it arrive as a normal fax, with no indication that it came from email.
This method is useful when you need to send documents to someone who still uses a fax machine but you do not have fax equipment yourself. It is also faster than printing, scanning, and feeding pages into a physical machine.
Key Takeaways
- Fax-to-email services let you send a fax by attaching a document to an email and addressing it to a fax number provided by the service.
- Common services include eFax, Fax.plus, and HelloFax, which charge monthly fees ranging from about $10 to $30 depending on the number of faxes you send.
- Most services support PDF, Word, and image files, but you should check the file format requirements before sending important documents.
- The recipient receives your fax on their machine or computer exactly as if you had sent it from a traditional fax device.
- Some services also let you receive faxes via email, so you can manage both incoming and outgoing faxes in one place.
How the fax-to-email address format works
When you sign up for a fax-to-email service, you receive instructions on how to format the recipient's fax number as an email address. The format is usually the 10-digit fax number, followed by the service's domain. For example, if you are sending to fax number 555-123-4567 through eFax, you would address the email to 5551234567@efax.com.
Some services use different domain formats. Fax.plus uses @fax.plus, while other providers may use their own domain. You will find the exact format in your account settings or in the service's help documentation. If you get the format wrong, the email will bounce back to you with an error message rather than being transmitted as a fax.
You can usually save frequently used fax numbers as contacts in your email, so you do not have to type the full address each time. This makes sending multiple faxes to the same recipient much faster.
What file types you can send and size limits
Most fax-to-email services accept PDF files, Microsoft Word documents, and image files such as JPG and PNG. Some also accept Excel spreadsheets and PowerPoint presentations, though these are converted to PDF or image format before transmission. You should check your service's documentation to confirm which formats work, especially if you are sending an unusual file type.
File size limits vary by service. Many allow attachments up to 25 MB per fax, which is large enough for most documents. However, fax machines themselves have resolution and page limits, so a very large file may be split across multiple pages or compressed during transmission. If you are sending a document with fine details or small text, test it with a short fax first to make sure the recipient can read it clearly.
Some services charge per page rather than per fax, so a 50-page document might cost more than a 5-page one. Check your service's pricing before sending a large batch of pages.
Popular fax-to-email services and their costs
eFax is one of the oldest and most widely used services. It offers plans starting around $10 per month for a limited number of outgoing faxes, with higher tiers for frequent users. eFax also provides a dedicated fax number so you can receive faxes via email.
Fax.plus charges a similar range, with plans that include both sending and receiving. It integrates with cloud storage services like Google Drive and Dropbox, so you can send documents directly from those platforms without downloading them first.
HelloFax offers a free tier that lets you send and receive a limited number of faxes per month, making it a good option if you only need to send a fax occasionally. Paid plans start around $10 per month for more volume.
Pricing structures differ: some charge a flat monthly fee regardless of how many faxes you send, while others charge per fax or per page. If you only send a fax once or twice a year, a pay-as-you-go service may be cheaper than a monthly subscription. Compare the services' pricing pages directly, as rates change and vary by region.
Steps to send a fax through email
First, sign up for a fax-to-email service and log into your account. You will receive your account details and instructions on how to format fax addresses.
Second, open your regular email (Gmail, Outlook, or whatever you use) and create a new message. In the "To" field, enter the recipient's fax number in the format specified by your service — for example, 5551234567@efax.com.
Third, attach the document you want to fax. Click the attachment button, select your file, and confirm. You can usually attach multiple files, and the service will combine them into a single fax transmission.
Fourth, add a subject line and any message text you want to include. Some services print this information on a cover sheet that precedes the faxed document.
Fifth, send the email. The service processes it within seconds to a few minutes and transmits it to the recipient's fax machine. You will usually receive a confirmation email showing that the fax was sent successfully.
When email-to-fax is not the best option
If you need to send faxes very frequently — more than 50 per month — a traditional fax machine or a dedicated business fax line may be more cost-effective than paying per-fax fees. Some internet service providers include fax capability with their phone service, which could be cheaper if you already subscribe.
If the recipient's fax machine is unreliable or frequently offline, email-to-fax will not help, because the service cannot deliver the fax if the machine is not available. In that case, you might ask the recipient if they can receive faxes via email instead, or if they have an alternative contact method.
If you need to send a fax that includes a handwritten signature or a document that must be certified as an original, check whether your service offers a way to notarize or authenticate the transmission. Most do not, so you may need to use a physical fax machine or a specialized notary service for legally sensitive documents.
Frequently Asked Questions
Does the person receiving the fax know it came from email?
No. The fax arrives on their machine or in their email inbox (if they also use a fax-to-email service) exactly as if you had sent it from a traditional fax device. There is no indication that the transmission originated from email.
What if I send a fax and get an error message?
The most common reason is an incorrect fax number or address format. Double-check that you used the right phone number and the correct domain for your service. If the number is correct, the recipient's fax machine may be offline or out of paper. Contact the recipient to confirm their fax number is active, then try again.
Can I schedule a fax to send at a specific time?
Some services offer scheduling, but not all. Check your service's features or contact their support team. If scheduling is important to you, look for it when choosing a service.
Is sending a fax through email find?
Email-to-fax services use encryption to protect your documents in transit, similar to regular email. However, faxes themselves are not encrypted once they arrive on the recipient's machine, so anyone with access to that machine can read them. If you are sending sensitive information, confirm that the recipient's fax machine is in a find location.
What happens if my fax is too large to send?
The service will usually reject it and send you an error message telling you the file is too large. You can split the document into smaller files and send multiple faxes, or compress the file to reduce its size. Some services also let you reduce image resolution, which makes files smaller but may affect readability.