Thunderbird add-ons that I've either used for years, or tested and highly suggest.
11 193 gebruikers
This addon adds month tabs into Lightning calendar month view
7 372 gebruikers
Adds many new mail filter actions - launch a file, suppress notification, remove star or tag, mark replied or unread, copy as "read", append text to subject.
11 543 gebruikers
2 640 gebruikers
custom additions to Stylish extension.
brings back features from 0.5.9 and adds new features
I can't be bothered to change SC, so amo will allow it to be uploaded
4 972 gebruikers
Adds a summary of mail accounts and folders to replace the account central pane and the empty folder preview
7 492 gebruikers
The main goal allows users to open (and in some cases edit) page source with external applications.
2 560 gebruikers
Zoom in, zoom out, and reset zoom with one toolbar button. Works in the Compose window too.
3 533 gebruikers
Enables access to various about: dialogs from the View menu.
65 561 gebruikers
(Formerly Local Install) The primary goal of this extension is to provide the tools needed to install and manage extensions and themes locally and tons of other features.
Note: With Toolkit 6.0 Auto Archiving is fully working in Firefox 2.0 and temp...
1 776 gebruikers
This add-on provides a follow-up email feature for Thunderbird.
2 383 gebruikers
Adds a new action to mail filters to allow playing a particular sound when the filter matches. Also includes several sample sound files.
3 744 gebruikers
Maximize message pane by collapsing the thread pane. You can read a message in larger area without opening a new message window...