PMM File Extension

PMM file icon
Pegasus Mail Mailbox Format
  • Developer
    David Harris
  • Popularity
    3.2 (5 votes)

What is PMM file?

PMM filename suffix is mostly used for Pegasus Mail Mailbox Format files. Pegasus Mail Mailbox Format specification was created by David Harris. PMM file format is compatible with software that can be installed on Windows system platform. PMM file belongs to the Data Files category just like 1258 other filename extensions listed in our database. The most popular program for handling PMM files is Pegasus Mail, but users can choose among 1 different programs that support this file format. Software named Pegasus Mail was created by David Harris. In order to find more detailed information on the software and PMM files, check the developer’s official website.

Programs which support PMM file extension

Below is a table that list programs that support PMM files. PMM files can be encountered on all system platforms, including mobile, yet there is no guarantee each will properly support such files.

Programs that support PMM file

How to open file with PMM extension?

Problems with accessing PMM may be due to various reasons. What is important, all common issues related to files with PMM extension can be resolved by the users themselves. The process is quick and doesn’t involve an IT expert. We have prepared a listing of which will help you resolve your problems with PMM files.

Step 1. Install Pegasus Mail software

Problems with opening and working with PMM files are most probably having to do with no proper software compatible with PMM files being present on your machine. This one is an easy one. Select Pegasus Mail or one of the recommended programs (for example, Aid4Mail) and download it from appropriate source and install on your system. The full list of programs grouped by operating systems can be found above. One of the most risk-free method of downloading software is using links provided by official distributors. Visit Pegasus Mail website and download the installer.

Step 2. Update Pegasus Mail to the latest version

If you already have Pegasus Mail installed on your systems and PMM files are still not opened properly, check if you have the latest version of the software. It may also happen that software creators by updating their applications add compatibility with other, newer file formats. If you have an older version of Pegasus Mail installed, it may not support PMM format. The most recent version of Pegasus Mail is backward compatible and can handle file formats supported by older versions of the software.

Step 3. Set the default application to open PMM files to Pegasus Mail

After installing Pegasus Mail (the most recent version) make sure that it is set as the default application to open PMM files. The process of associating file formats with default application may differ in details depending on platform, but the basic procedure is very similar.

Selecting the first-choice application in Windows

  • Right-click the PMM file and choose Open with option
  • Next, select the Choose another app option and then using More apps open the list of available applications
  • To finalize the process, select Look for another app on this PC entry and using the file explorer select the Pegasus Mail installation folder. Confirm by checking Always use this app to open PMM files box and clicking OK button.

Selecting the first-choice application in Mac OS

  • By clicking right mouse button on the selected PMM file open the file menu and choose Information
  • Proceed to the Open with section. If its closed, click the title to access available options
  • From the list choose the appropriate program and confirm by clicking Change for all....
  • If you followed the previous steps a message should appear: This change will be applied to all files with PMM extension. Next, click the Continue button to finalize the process.

Step 4. Check the PMM for errors

Should the problem still occur after following steps 1-3, check if the PMM file is valid. It is probable that the file is corrupted and thus cannot be accessed.

1. Verify that the PMM in question is not infected with a computer virus

Should it happed that the PMM is infected with a virus, this may be that cause that prevents you from accessing it. Scan the PMM file as well as your computer for malware or viruses. If the PMM file is indeed infected follow the instructions below.

2. Ensure the file with PMM extension is complete and error-free

Did you receive the PMM file in question from a different person? Ask him/her to send it one more time. The file might have been copied erroneously and the data lost integrity, which precludes from accessing the file. It could happen the the download process of file with PMM extension was interrupted and the file data is defective. Download the file again from the same source.

3. Check if the user that you are logged as has administrative privileges.

Some files require elevated access rights to open them. Log in using an administrative account and see If this solves the problem.

4. Check whether your system can handle Pegasus Mail

If the systems has insufficient resources to open PMM files, try closing all currently running applications and try again.

5. Ensure that you have the latest drivers and system updates and patches installed

Regularly updated system, drivers, and programs keep your computer secure. This may also prevent problems with Pegasus Mail Mailbox Format files. It is possible that one of the available system or driver updates may solve the problems with PMM files affecting older versions of given software.

Do you want to help?

If you have additional information about the PMM file, we will be grateful if you share it with our users. To do this, use the form here and send us your information on PMM file.

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