EFX File Type

- The quick facts

What are EFX files and how to open them

Are you having problems opening an EFX file or just wondering what they contain? We explain what these files are used for and show you software that we know can open or otherwise handle your 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.

How to open EFX files

Important: Different programs may use files with the EFX file extension for different purposes, so unless you are sure which format your EFX file is, you may need to try a few different programs.

While we have not verified the apps ourselves yet, our users have suggested 8 different EFX openers which you will find listed below.

Last updated: July 13, 2020

Suggest another file format using extension EFX

While we know of one file format using the .EFX file extension, there may be more. It is widespread that different programs use files with the same file extension for very different types of data. Please let us know if you are aware of a different kind of .EFX file.

Various apps that use files with this extension

These apps are known to open certain types of EFX files. Remember, different programs may use EFX files for different purposes, so you may need to try out a few of them to be able to open your specific file.

eFax MessengereFax MessengerUser submitted
j2 Messengerj2 MessengerUser submitted
eFax Messenger PluseFax Messenger PlusUser submitted
VinylMaster ProVinylMaster ProUser submitted
eFile ExpresseFile ExpressUser submitted
eFile Express for Tax ProfessionalseFile Express for Tax ProfessionalsUser submitted
VinylMasterProVinylMasterProUser submitted
CRP GenCRP GenUser submitted
We have not verified any software that we know for certain will work with EFX-files on Mac. If you know one, please use the 'Suggest a program' link below and tell us about it!
We have not verified any web services that we know for certain will work with EFX-files. If you know one, please use the 'Suggest a program' link below and tell us about it!