| mozeml | Thunderbird Spotlight Searchable Email |
| mozmsgs | Thunderbird Mail Folder |
| mp | MatrixPlot Data |
| mp | Race Studio 2 Map File |
| mp+ | Incite Media Assistant File |
| mp0 | Ericsson GPEH Session Data |
| mp21 | AXMEDIS MPEG21 Data |
| mp5 | Maple Data |
| mp6 | CS225 MP6 Huffman Encoding Text Data |
| mpa | Mail.dat Postage Account File |
| mpack | Mpack Encoded MIME Message |
| mpb | Music Publisher Backup File |
| mpb | My Phone Explorer Data |
| mpc | ImageMagick Persistent Image Cache |
| mpcatalog | Phase One Media Pro Catalog |
| mpcb | ReliaSoft MPC Data |
| mpcd | MPViewer Data |
| mpd | Microsoft Project Database |
| mpd | Xilinx Microprocessor Peripheral Definition |
| mpdb | Windows Media Player 12 Database |
| mpdsp | eXtendable Wad Editor MPDSP Data |
| mperm | PLINK Max Permutation Test Report Data |
| mpex | Mass Properties Exchange Data |
| mpf | MADRIX Patch Data |
| mpgindex | Adobe Premiere Mpeg Index |
| mpgp | MacPGP Data |
| mph | COMSOL Multiphysics Data |
| mph | PhotoLine Morphing Data |
| mphbin | COMSOL Multiphysics Binary Data |
| mpi | Moldflow Plastics Insight Document |
