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Sending a Fax Using Email (Email-to-Fax) | BT Cloud Work

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The time required for transmitting fax messages depends on the quality and content of the fax that will be sent. For documents that contain mostly text, it usually takes approximately 1 minute per page for the document to be delivered. When sending documents that contain graphics (scanned pages of documents), or for faxes sent to a slow fax line, it may take 5 minutes per page or more to be delivered.


  1. Ensure that your email address is set on your BT Cloud Work extension. See Set User Details for more information.
  2. If you want to use Email-to-Fax using other Email Addresses, ensure that your alternate email address is added to your extension's Trusted Email Addresses List for sending faxes. See Adding Email Addresses Permitted to Send Faxes for more information.

IMPORTANT: Ensure that your email address is added to only 1 extension's Trusted Email Addresses list. If your email address is added to more than 1 extension's Trusted Emails list, BT Cloud Work will not be able to identify which extension is sending the fax, thus the fax will fail to send. 

  1. Ensure that you are sending the fax (email) to less than 50 recipients.
  2. If you want to send a fax message to more than 50 recipients at a time, then the Fax Broadcasting feature must be enabled on your account.

Tips when sending a fax

  • To send a fax to an international number, enter (+) and the country code, followed by the phone number in the To: field, and followed by
  • The domain "" is applicable to up to 49 recipients. For fifty (50) recipients or more, enter the numbers of all the recipients in the To: field followed by the domain "". 
  • International calling has to be enabled to be able to send faxes abroad.
  • To send to multiple fax numbers, enter each number in the To: field separated by a semicolon (;) followed by a single space. 
  • You can also use the Cc: field to add more recipients.

How to send a fax via email

Follow the steps below if you are sending fax messages to up to 50 recipients or if Fax Broadcasting is disabled on your BT Cloud Work account.

  1. Open your email client, then compose a new message.
  2. Enter the 11-digit phone number of your recipient in the To:  field followed by
  3. If you want to include a note and send a Fax Cover Page, type it in the Subject field of the email. 

NOTE: The Fax Cover Page details and design will depend on what is set on your extension's Outbound Fax Settings. You can also configure your Outbound Fax Settings to remove the cover page when the email subject is blank. See Fax Settings - Update Cover Page Information for more information. 

  1. Attach the documents to fax.
    • Ensure that the attached files are supported. The filename of the attached files should not include ampersands (Example: &) or other special characters. Ensure that the total size of the attached files does not exceed 20MB. See Supported Fax Attachments for more information.
    • You can also attach your customized fax cover page. 
    • Ensure that the email body is empty. Remove your signature, images or footnotes. 
  2. Click Send. You will receive an email confirmation containing the fax transmission results.


See Also

Fax Settings Overview

Steps To Reproduce
Affected Environment
TitleSending a Fax Using Email (Email-to-Fax) | BT Cloud Work
URL Name7837
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