Files with MAI extension could be found as saved e-mail messages in old Microsoft Mail program.

There are 2 other file types using
the MAI file extension!

empty icon.mai - Pegasus mail sub directory

empty icon.mai - Sony video thumbnail file format

Detailed description

Software that works with mai file extension

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MAI file - Microsoft Mail message file

What is mai file? How to open mai files?

File type specification:

Internet related file type icon Internet related file type

The MAI file extension is related to Microsoft Mail, an older mail server program for early versions of Microsoft Windows operating system. A *.mail file contains saved e-mail message. Might be a little old format and no longer used.

Help how to open MAI files:

This file type is not meant to be opened directly, there is no software that could open and work with it directly, or there is no information available in public sources about opening this file type. This is usually the case of some internal data files, caches, temporary files etc.

How to convert file with extension MAI:

As far as we know, this .mai file type can't be converted to any other file format. This is usually the case of system, configuration, temporary, or data files containing data exclusive to only one software and used for its own purposes. Also some proprietary or closed file formats cannot be converted to more common file types in order to protect the intellectual property of the developer, which is for example the case of some DRM-protected multimedia files.

List of recommended software applications associated to the .mai file extension

Recommended software programs are sorted by OS platform (Windows, macOS, Linux, iOS, Android etc.)
and possible program actions that can be done with the file: like open mai file, edit mai file, convert mai file, view mai file, play mai file etc. (if exist software for corresponding action in's database).

  • Others mai file

Unspecified and all other actions for computer programs working with mai file - Microsoft Mail message file

Click on the software link for more information about Microsoft Windows. Microsoft Windows uses mai file type for its internal purposes and/or also by different way than common edit or open file actions (eg. to install/execute/support an application itself, to store application or user data, configure program etc.).

Microsoft Windows:

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