Claris Emailer file
File type: Internet related file
A .mman file is an email-related data file used by Claris Emailer, an email application for classic Mac OS.
It belongs to the Claris Emailer application rather than being a common, standalone document format.
File type category:
Internet related file
Date updated: October 2, 2026
Claris Emailer was an email client developed by Claris for Macintosh computers. The MMAN file extension identifies a file used by that application to store or manage email-related data.
The format was designed for the classic Mac OS environment and is now obsolete. Claris Emailer is no longer maintained, and modern operating systems do not generally provide native support for its files.
Open an .mman file with Claris Emailer on a compatible classic Mac OS system. The file may need to be placed in the location expected by the application rather than opened as a standalone document.
Current macOS and Windows applications generally cannot open this format directly. A compatible older Macintosh environment may be required to access the file.
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