.PMM File Extension
File Type 1MikuMikuDance PolygonMovieMaker File
What is a PMM file?
3D dance animation project created by MikuMikuDance, a dance animation program originally created in Japanese; contains model, animation, and music settings for a 3D dance routine; supports multiple dancers in the same scene.
File Type 2Pegasus Mail Mailbox File
.PMM File Association 2
Email data file created by Pegasus Mail, a free email program for Windows; contains messages for an email folder such as drafts, received email, or sent email; used to save all email messages for a user account.
PMM files contain a 128-byte header followed by the ASCII-formatted text of all email messages.