File extension .MSF
Full Name | Developer | Category |
---|---|---|
Mozilla Thunderbird Mail Summary Format | N/A | Misc Files |
The MSF file extension stands for Mail Summary File, which is primarily associated with the Outlook Express email client program. It is generated automatically by Outlook Express as a way of keeping copies of messages that are received and sent. It also includes important details concerning those messages. MSF files are the default message store files of Outlook Express, however these files can be deleted manually by the user at any time.
Typically speaking, MSF files are stored in a folder in the Windows directory structure associated with the email account used to send and receive messages. Users can modify the default behavior of Outlook Express and elect to store their MSF files elsewhere on their computer system. This file type contains meta data describing the emails stored in them, including summary information such as sender name, recipient address, date, subject, and size. It can also include attachments or embedded images that were included with an email message.
Similar File Extensions
Other similar file extensions include .mbx, .idx, .dbx, .oft, and .tbb.
Programs for WINDOWS system
Programs for MAC system
Programs for LINUX system
After installing the required software, the operating system will usually automatically associate an unknown file type (in this case .MSF) with the new application. If this does not happen, we can help the system a bit by selecting the software for it, which it should always use to open files with the .MSF extension.
When choosing the software we can select the system to use this software every time.
Remember!
Using it for the first time it is good to check whether the .MSF file opened in the application can be read by us and opens in a way that allows us to use it. If everything is in order, select this option the next time you open a file with the .MSF extension. However, if the file has not opened correctly, we have to look for a different software, with which we can open files with the .MSF extension. Select a different software from our list and install it on your computer. After the software is installed, repeat inspection openings of a .MSF file. Sometimes you have to repeat the operation several times.
Other instructions
If none of the programs listed by us to work with the .MSF file has not meet your expectations, you can try searching other websites. But remember to avoid downloading programs "that can open any file". These applications not only have very limited functionality, but may also expose you to expense tens of dollars when purchasing a license.
In the vast majority of cases you will find the program dedicated to support the .MSF file, or any other file format. In addition, there is a chance that it will be a free program, and its functionality (concerning the .MSF file) will be extended to the maximum.
It is also good to check
- if the .MSF file has no errors
- or if it has been copied (or downloaded by the browser) thoroughly
Author’s guidelines

Mr B. Adam
Author of the guidelines / Founder of FileExtension.info
New technologies enthusiast, helping to solve problems with the files.
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