>> PM1 file

PM1 file format description

Many people share .pm1 files without attaching instructions on how to use it. Yet it isn’t evident for everyone which program a .pm1 file can be edited, converted or printed with. On this page, we try to provide assistance for handling .pm1 files.

1 filename extension(s) found in our database.

.pm1 - Pegasus Mail Folder Secondary Index

The PM1 data files are related to Pegasus Mail. PM1 file is a Pegasus Mail Folder Secondary Index. Pegasus Mail is a previously freeware, proprietary, email client that is developed and maintained by David Harris.

Pegasus Mail
Data files
- / -
Pegasus Mail Folder Secondary Index related extensions:
Pegasus Mail Address Book
Kernel for NTFS Data Recovery Snapshot Data
PhotoVOCA Communication Board Data
Hetero Number Viewer Input Data
GRAMPS Database
Desktop Poet Word List

Naturally, other applications may also use the .pm1 file extension. Even harmful programs can create .pm1 files. Be especially cautious with .pm1 files coming from an unknown source!

Can't open a .pm1 file?

When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:

Windows can't open this file:


To open this file, Windows needs to know what program you want to use to open it. Windows can go online to look it up automatically, or you can manually select one from a list of programs that are installed on your computer.

To avoid this error, you need to set the file association correctly.

The .pm1 file extension is often given incorrectly!

According to the searches on our site, these misspellings were the most common in the past year:

m1, mp1, p1, pj1, pl1, pm, pml, pmq, pmw

Is it possible that the filename extension is misspelled?

Similar file extensions in our database:

Perl Module
PM Bitmap Image
Windows NT Performance Monitor Log
PL/I Source Code
Pegasus Mail Outgoing Draft Message
Palm Markup Language File

Operating systems currently supports the following operating systems:

Windows XP/Vista, Windows 7/8, Windows 10, CentOS, Debian GNU/Linux, Ubuntu Linux, FreeBSD, Mac OS X, iOS, Android

If you find the information on this page useful, please feel free to link to this page.

If you have useful information about the .pm1 file format, then write to us!