You do not have to open the portal to send a fax. With email-to-fax, you attach your document to a normal email and send it to a special address — and we fax it for you. It is the quickest way to fax from your phone, laptop, or any device with email.
How to address the email
The To address of your email is the fax number you are sending to:
recipientfaxnumber@fax.reliaring.com
Write the recipient's fax number as digits only, with no spaces or symbols — for example, to fax a document to +1 (403) 555-1234 you would email it to 14035551234@fax.reliaring.com. We check that it is a valid phone number before sending, so if your fax bounces back, double-check the digits and the country code.
Your fax is sent from your default fax line — the line chosen under Fax → Settings. That is the number the recipient sees on the fax header.
Send the fax
- Start a new email from the email address on your ReliaRing account (see the security note below).
- In the To field, enter the recipient's fax number followed by @fax.reliaring.com (for example, 14035551234@fax.reliaring.com).
- Attach your document. Word, Excel, and PowerPoint files, images, and PDFs all work — we convert them to a fax for you (see What you can attach, below).
- Send the email.
We convert your attachment, dial the recipient's fax number, and transmit the fax from your default fax line. You will get a confirmation, and the fax also appears in your Outbox under Fax → Inbox.
What you can attach
Email-to-fax accepts far more file types than the portal upload does. We convert most common documents and images into a fax for you:
| Attachment | Formats we accept |
|---|---|
| pdf (sent as-is) | |
| Word documents | doc, docx, odt, rtf, txt |
| Spreadsheets | xls, xlsx, ods, csv |
| Presentations | ppt, pptx, odp |
| Images | jpg, jpeg, png, tiff, gif, webp |
Limits per email:
- Up to 10 attachments.
- Up to 50 MB per attachment, and 50 MB total across the whole email.
If you attach more than one file, we combine them into a single fax in the order they are attached.
If we cannot convert a file
If an attachment is in a format we cannot turn into a fax, we do not silently drop it. Instead, we email you back to let you know and ask you to resend that document as a PDF. If you get one of those replies, open the file, save or print it as a PDF (most apps have a "Save as PDF" or "Print to PDF" option), and send it again.
Only authorized senders can use it
For security, we only accept email-to-fax messages from email addresses that are authorized on your account. If an email arrives from an address we do not recognize, it is rejected and no fax is sent. This stops strangers from sending faxes billed to your account.
If your fax is not going through, make sure you are sending from the same email address that is registered on your ReliaRing account. You can manage authorized senders from your ReliaFax line configuration.
If your email is on more than one account
If the same email address belongs to more than one ReliaRing account, open Fax → Settings and turn on Send my email-to-fax messages from this account so we know which account (and which sending number) to use.
Related articles
- Sending a fax from the portal
- Fax settings and preferences
- Why faxes fail and how to fix them