Mozilla Thunderbird mail summary
File type: Email related data file
Files with msf extension contain mail summary data from Mozilla Thunderbird, an e-mail client for Windows, Mac and Linux.
Found 7 different file type records with the same msf filename suffix.
File type category:
Email related data file
Date updated: November 21, 2023
File extension msf is associated with Mozila Thunderbird. Thunderbird's mail files are in the standard plain text "mbox" format, which almost all mail programs can use or import.
Many proprietary mail programs have a function to import from Eudora, which also uses the "mbox" format; this function should read your Mozilla mail files properly.
Your mail files are inside your profile (see the Profile Folder), in the Mail and (if you use IMAP) ImapMail folders.
Each mail folder (Inbox, Sent, etc.) is stored as two files — one with no extension (e.g. INBOX), which is the mail file itself (in "mbox" format), and one with an msf file extension (e.g. INBOX.msf), which is the index (Mail Summary File) to the mail file. Tell the other program to import mail from the file with no extension.
The *.msf file is used by Thunderbird for internal purposes.
It doesn't seem very likely that conversion of any kind is possible for this type of .msf files.
Software apps that create msf files:
Microsoft Windows
Apple macOS / Mac OS X
Linux/Unix
Software applications that handle other tasks involving msf files:
Microsoft Windows
Apple macOS / Mac OS X
Linux/Unix
File type category:
Settings, options, themes or skins file
Date updated: June 25, 2019
The msf file extension is associated with the Quartus II design software for Microsoft Windows operating system, developed by Altera company.
The msf file contains settings for Quartus II program.
Probably not meant to be accessed by the user.
Probably cannot be converted to anything else.
Software apps that manage or store settings in msf files:
Multiplatform
File type category:
Various data file
Date updated: December 11, 2018
Record marked as obsolete and not updated for a long time.
The msf file extension is associated with applications developed by Epson.
The msf file stores some kind of data used by Epson tools.
Epson is Japanese developer of electronic devices.
Mime types:
application/vnd.epson.msf
File type category:
Settings, options, themes or skins file
Date updated: October 2, 2026
A Miranda IM skin settings file stores options used to control the appearance of the Miranda IM interface. It works with the program's skin system and is associated with a particular visual configuration.
Miranda IM was a Windows instant messaging client, and this format is associated with its legacy skin settings. The file is intended for use by Miranda IM rather than as a general-purpose document.
Open the file with Miranda IM on Microsoft Windows. In normal use, place the file where Miranda IM expects its skin files and select or apply the corresponding skin from the program's settings.
An .msf file is not normally opened as a standalone document. A text editor may display its contents, but it will not apply the skin settings.
There is no standard conversion process for Miranda IM skin settings files. The settings are specific to Miranda IM's skin system.
To use the appearance in another configuration, apply the skin in Miranda IM and recreate the desired settings in a compatible skin or configuration.
Software apps that manage or store settings in msf files:
Microsoft Windows
File type category:
Various data file
Date updated: July 29, 2018
File can combine multiple sequences in a single file, called a Multiple Sequence Format (MSF) file. MSF files include not only the sequence name but also the sequence itself, which is usually aligned with the other sequences in the file. You can specify a single sequence within an MSF file, a subset of sequences, or all sequences.
Use compatible tools to work with *.msf files.
Probably can be exported to other formats.
Software applications that handle other tasks involving msf files:
Linux/Unix
File type category:
Various data file
Date updated: September 22, 2026
Quanta MSF is a chemical modelling application, and an MSF file is one of its input files. It is intended to be read by the modeller rather than used as a general-purpose document.
The exact contents depend on the modelling task and the data supplied to Quanta MSF.
Open the file with the Quanta MSF chemical modeller. Use the application's Open or equivalent command and select the MSF file.
Open the file in Quanta MSF and use the application's own export or save options, if the required target format is supported.
File type category:
Various data file
Date updated: May 25, 2018
The msf file extension seems also be used for some kind of list file generated by certain Sony recorders, for example the PCM-D50. You can these lists as MSGLIST.MSF files.
The msf file contains information such as the order of folders, playback order of audio files and recording date and time.
If user connects the recorder to the computer, the MSGLIST.MSF files are displayed, but you should not delete or change these files. If these files are changed, they may get broken or the recorder may not work correctly.
You probably cannot access these files manually.
A conversion of any kind of highly unlikely.
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