Files with mff extension can be found as older email messages from Microsoft Mail service from the times of Windows NT operating system.

There are 5 other file types using
the MMF file extension!

mmf icon.mmf - Synthetic music mobile application format

empty icon.mmf - McAfee VirusScan configuration

empty icon.mmf - Meal Master format

empty icon.mmf - Media Processing Server Studio reference file

mmf icon.mmf - SMAF Synthetic music mobile application format

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MMF file extension - Microsoft Mail message

What is mmf file? How to open mmf files?

File type specification:

Document file type icon Document file type

File extension mmf is used by the Windows NT mail client for a saved collection of e-mail messages.

This type of .mmf files are not meant to be read by Microsoft Outlook Express, but they can be exported to the pst file format using Microsoft Exchange.

This mmf file type entry was marked as obsolete and no longer supported file format.

This type of file is no longer actively used and is most likely obsolete. This is typically the case for system files in old operating systems, file types from long discontinued software, or previous versions of certain file types (like documents, projects etc.) that were replaced in higher versions of their original programs.

The default software associated to open mmf file:

Microsoft Exchange Server icon

Microsoft Corporation logoMicrosoft Exchange Server  Microsoft Windows software

Company or developer:
Microsoft Corporation

Microsoft Exchange Server is server side service used to manage electronic mails, calendaring, contacts and tasks. Microsoft Exchange is supported by variety of desktop e-mail clients (Microsoft Outlook, Apple Mail, Thunderbird) as well as smart mobile e-mail clients (Windows Mobile, Windows Phone, Android, iOS).

Help how to open:

Use Microsoft Mail or similar email clients to open *.mmf message files.

How to convert:

Microsoft Exchange can be used to export .mmf messages to .pst format.

List of software applications associated to the .mmf 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 mmf file, edit mmf file, convert mmf file, view mmf file, play mmf file etc. (if exist software for corresponding action in's database).

Click on the tab below to simply browse between the application actions, to quickly get a list of recommended software, which is able to perform the specified software action, such as opening, editing or converting mmf files.

Software that open mmf file - Microsoft Mail message

Programs supporting the exension mmf on the main platforms Windows, Mac, Linux or mobile. Click on the link to get more information about Microsoft Mail for open mmf file action.

Microsoft Windows:

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