Learning Hub / Tutorials / 3CX / Fax-to-Email Setup (V20)FAQs

Tutorials: Fax-to-Email Setup (V20)

Learn how to set up Fax-to-Email in 3CX Version 20!

Required Access: 3CX


Last Updated: 6/13/2025

3CX login

Enter your credentials.

3cx admin gear



Click on the "Admin" tab in the lower left corner of the screen.

fax option in the advanced tab in 3CX

Click on the "Advanced" tab, then select the "Fax" option.

fax information page in 3CX

Enter the following:

  • Default Email Address: Enter your fax email. Calls to this number will be assumed to be faxes and will automatically be converted to the PDF format, which will then be forwarded to the email specified.
  • Assigned DID number(s): Assign DID numbers to this fax number from the drop-down menu.
  • Enable G.711 to T.38 Fallback: Make sure this box is checked.
Learning Hub / Tutorials / 3CX / Fax-to-Email Setup (V20)FAQs