What is Mozilla Thunderbird? Mozilla Thunderbird is a cross platform email, newsgroup, and chat client which is developed by Mozilla foundation. This emailing client is enriched with features such as saved search options, quick search folders, message grouping, labels, advanced message filtering etc. You will find this application incorporating spam filter, a white list based on address book and many more aspects. With extensions, addition of features through the installation of XPInstall modules via add-ons websites also features an update function. You can choose plenty of themes as per your wish to change the look. It support for POP, IMAP, and LDAP address completion. Its specialty is its ability to run on plenty of OS such as Windows, Linux, and OS X.
In Windows Thunderbird stores email databases in the profile folder which is located in the following mentioned location:
Here the refer to the system tips for describing %USERPROFILE% thing; you have to adjust Windows Explorer settings in order to show hidden objects - the Application Data folder is hidden with the default system settings.
XXXXXXXX.default - here X refers to any letter or number.
Within the profile folder, you must look to search a subfolder for each of the mail accounts and the other one for 'Local Folders'. Each of these folders comprises of files with the names matching your Thunderbird folder names.
Each of the Thunderbird mail folder stores in two files which are named after the mail folder name such as:
File with no extension consisted of email messages in the plain text format, one after the other. This file is actually larger in size than MSF index.
Then the corresponding .MSF file comprise of mail folder indexes and preference data. Thunderbird shows the part of message to be displayed, the arrangement of messages within the folder, and many more, entirely based on the .MSF file info. You must know here that.MSF file has no email messages. Thunderbird will reconstruct .MSF files as per the requirement if they are missing.
Folders which have .SBD file type are basically designed for a subfolder management. Here SBD is shortened for SuBDirectory. They are used for holding a hierarchy of all the mail folders. When you create a new folder within some of the existing for the very first time, Thunderbird automatically creates a .SDB folder for storing email data of child folder. Name of the folders are according to the parent folder to which child belongs.
As an example, if you create a mail folder under Inbox folder, then message database file as well as corresponding MSF file of the child folder will get stored in
%USERPROFILE%\Application Data\Thunderbird\Profiles\XXXXXXXX.default\Mail\Local Folders\Inbox.sbd