.MAI File Extension

Microsoft Mail File

Developer Microsoft
3.8  |  9 Votes

What is a MAI file?

Single mail file processed by Microsoft Mail, Microsoft's mail server program; contains actual message data and may be referenced by one or more mailbag record (.MBG) files.

More Information

Microsoft Mail was introduced in 1991 and has since been replaced by Microsoft Outlook.

Open over 400 file formats with File Viewer Plus.Free Download

Programs that open MAI files

Microsoft Mail

Verified by FileInfo.com

The FileInfo.com team has independently researched the Microsoft Mail file format and Windows apps listed on this page. Our goal is 100% accuracy and we only publish information about file types that we have verified.

If you would like to suggest any additions or updates to this page, please let us know.