Having problems opening an EFX file?

We have programs that can open or convert your EFX files.

Opening EFX files

Did your computer fail to open an EFX file? We explain what EFX files are and recommend software that we know can open or convert your EFX files.

What is an EFX file?

Files that contain the .efx file extension are most commonly associated with the eFax fax messaging software program.

eFax is a digital faxing application that allows users to send and receive fax transmissions via email or by using the online eFax Internet interface.

When a fax document is created by the eFax application, the file is saved to the user's computer with the .efx extension. These files can contain the body of the email that was sent via fax as well as any attachments that the fax may have included.

EFX files can be converted into PDF or TIF files using the eFax Messenger application.

Try a universal file viewer

Try a universal file viewer like Free File Viewer. It can open over 200 different types of files - and most likely yours too. Download Free File Viewer here.

About File Extension EFX

File.org aims to be the go-to resource for file type- and related software information. We spend countless hours researching various file formats and software that can open, convert, create or otherwise work with those files.

If you have additional information about the EFX file format or software that uses files with the EFX suffix, please do get in touch - we would love hearing from you.