If you already own MightyFax, please see below. These pages and downloads are provided for your convenience.  If you do not already have a MightyFax serial number, please do not download, as you will be unable to purchase the program.

All others...We are sorry, but MightyFax is no longer available for purchase. 


Click here to start the MightyFax download.

The file you will be downloading will be named mfsetup.exe. It is the installation file for MightyFax. The file size is approximately 6.6 Megabytes.  Once the file is downloaded and saved on your hard drive, you may run it at any time to install the MightyFax program on your computer.

Updating/upgrading for Existing MightyFax Users

To upgrade or replace your registered copy, you need to download and install the latest Trial Version of the program from one of the download links above. The Trial Version installation program contains everything needed to update or replace your registered copy of the program.

Once you have downloaded the correct Trial Version from the download link above, simply install the trial version, then follow the directions previously sent in the email containing your "registered name and serial number", using the same registration information (serial number etc) as previously sent. If you have lost your original registration information (name and serial number) please use our Serial Number Lookup Request form.

NOTE: If your serial number looks like "RKS-01234567" then you definitely need a new serial number to use this build. Go to the Serial Number Lookup Request page and request a new serial number (no charge). We have recently changed serial number format.


Searching for new fax software? We recommend the fax program EssentialFax which is distributed and sold by Essential Fax Software.