Adds the Google Calendar web interface as a new tab directly into Thunderbird. Creating and viewing events works just as it would in a browser like Firefox
Did your friend send you a cool link? Want to read the rest of that interesting article? Don't want to open up your web browser just to view it? You don't have to! Just view it in Thunderbird with ThunderBrowse!
Add symbol in header plane to switch between compact and expanded view. Options to switch between one or two lines compact view, which buttons should be displayed in header pane. For Thunderbird 36 and older use version 2.0.9 (see version history)
Displays icon for user agent of received mails.
Thunderbird Message Filter Import/Export is a thunderbird/mozilla extension to import/export message filters.
Note from Mozilla: This add-on has been discontinued. Try MinimizeToTray Revived instead.
Minimize applications to the system tray.
Adds a new action to mail filters to allow playing a particular sound when the filter matches. Also includes several sample sound files.
SoundPlus customizes the sound that is played when a new message arrives for a particular contact in the address book, similar to mobile phones. There is also a variation that is played when a message arrives and it is a continuation of a thread.