To send a fax via email, follow these steps:

To send a fax via email, follow these steps:

1. Create a new email:
• The recipient should be the fax number followed by @ufax.eu.
• Example: For an international fax, use 004969...@ufax.eu, or for national fax, use something like 20333390@ufax.eu.
2. Attach a PDF file:
• The document should be in A4 format (210 x 297 mm or 21 x 29.7 cm).
3. Subject line:
• Include your Fax key in the subject, formatted like this: fk:XXX-XXXXXXXXX.
4. Important details:
• The fax key can only be used with the domain it was issued for.
• You can send 1-5 documents in one email.
• You can include up to 5 different recipients.
• Only PDF documents are supported.
• Make sure the documents are in portrait orientation (not landscape).
5. Retrieve your Fax key:
• You can find your Fax key in the user settings of your pbx interface
• Go to the "User management" section, select the username, and find the fax key there.
6. Technical details of the Fax key:
• The Fax key is a 9-character substring from an MD5 hash of your username, password, and the string "faxkey", prefixed by your account code.

This method will allow you to send faxes via email seamlessly!