File Extension Search

.mai File Extension

Developer: Microsoft
File type: Microsoft Mail File
You're here because you have a file that has a file extension ending in .mai. Files with the file extension .mai can only be launched by certain applications. It's possible that .mai files are data files rather than documents or media, which means they're not meant to be viewed at all.

what is a .mai file?

Microsoft has several mail server programs used to send and receive emails from contacts and the single mail files that is processed using Microsoft mail programs are known as MAI files. In other words, MAI files refer to the email processed, sent, and saved using the Microsoft mail software that are affixed with the file extension .mai. They contain the data’s actual message that references numerous mailbag records. Through these files, users can access copies of the emails even when they are not online. In fact, it is not only the Microsoft mail programs that support MAI files but also other email programs like the Pegasus email application. MAI files were developed by Microsoft since it is the Microsoft mail application that mostly contains these files which is why they are also known as Microsoft Mail files. Some common Microsoft mail programs that use MAI files are Microsoft Outlook, Outlook Express, and Windows live Mail.

how to open a .mai file?

Launch a .mai file, or any other file on your PC, by double-clicking it. If your file associations are set up correctly, the application that's meant to open your .mai file will open it. It's possible you may need to download or purchase the correct application. It's also possible that you have the correct application on your PC, but .mai files aren't yet associated with it. In this case, when you try to open a .mai file, you can tell Windows which application is the correct one for that file. From then on, opening a  .mai file will open the correct application. Click here to fix .mai file association errors

applications that open a .mai file

Microsoft Mail

Microsoft Mail

Microsoft Mail or MSMail refers to the corporation's earlier email products, such as Star Nine Mail and MCI Mail, which were developed for Mac and PC networks. Presently, Microsoft provides free email services through, which is an upgraded version of the older Hotmail. Currently, looks cleaner with updated features that include mobile apps, automation, social sharing, and online messaging. Meanwhile, Microsoft's newest desktop email client is Windows Live Mail, which is stand-alone software from its Essentials Suite for Windows XP. The company's Microsoft Mail for PC Networks was replaced by Microsoft Exchange, which consists of a mail server, a shared calendar, and a contact manager. Migration from MSMail to Exchange required a general overhaul of the email server, including a big shift to using the Microsoft Exchange Internet Mail Service when connecting Exchange accounts to the SMTP server.

a word of warning

Be careful not to rename the extension on .mai files, or any other files. This will not change the file type. Only special conversion software can change a file from one file type to another.

what is a file extension?

A file extension is the set of three or four characters at the end of a filename; in this case, .mai. File extensions tell you what type of file it is, and tell Windows what programs can open it. Windows often associates a default program to each file extension, so that when you double-click the file, the program launches automatically. When that program is no longer on your PC, you can sometimes get an error when you try to open the associated file.

Find and fix file extension errors, registry problems and restore optimum PC performance quickly, easily and safely.

Try Registry Reviver® Free.

Start Download

leave a comment

Fix .mai File Extension now
Find and repair file association errors preventing this file type from opening on your computer.
Start Fix Now
Install Registry Reviver®
Registry Reviver
Are You Sure?
Repair file extension issues on your PC.

Install and try Registry Reviver for Free!

Copyright © 2023 Corel Corporation. All rights reserved. Terms Of Use | Privacy | Cookies
follow us
Summer Sale!
Up to 40% off

on Premium Suite package plus get Parallels Toolbox FREE!