MAILDB file format description

Many people share .maildb files without attaching instructions on how to use it. Yet it isn’t evident for everyone which program a .maildb file can be edited, converted or printed with. On this page, we try to provide assistance for handling .maildb files.

1 filename extension(s) found in our database.

.maildb - MSN Mail Database

The MAILDB data files are related to MSN Explorer. The MAILDB file is an MSN Mail Database. MSN Mail is a function within MSN Explorer.

MSN Explorer
Data files
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MSN Mail Database related extensions:
Babylon License Data
Acoustic Head Map File
Smart Reminder Database
WinPLOTR Intrinsic Profile Component Data
Microvellum Door Wizard File
PlasmaEPG Saved Favorites Data

Naturally, other applications may also use the .maildb file extension. Even harmful programs can create .maildb files. Be especially cautious with .maildb files coming from an unknown source!

Can't open a .maildb file?

When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:

Windows can't open this file:


To open this file, Windows needs to know what program you want to use to open it. Windows can go online to look it up automatically, or you can manually select one from a list of programs that are installed on your computer.

To avoid this error, you need to set the file association correctly.

Operating systems currently supports the following operating systems:

Windows XP/Vista, Windows 7/8/10, Windows 11, CentOS, Debian GNU/Linux, Ubuntu Linux, FreeBSD, macOS, Mac OS X, iOS, Android

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