Reject Button 1.0 Requires Restart
Annoyed by receiving mails with missing or wrong subjects or meaningless message bodies? Simply reject them with the Reject Button Add-On and enforce proper e-mail etiquette at the cost of just a few friendships.
Event-to-task conversion activator Requires Restart
Activates the Event-Task conversion ability...
MozLab Requires Restart
Remote shell and test-driven development tool for Mozilla developers
Check Attachment before Send Requires Restart
Confirms to send a mail with any attachment.
Address Move Button Requires Restart
Allow you to add a Address Move Button to mail compose window.
QuickMultiselect Requires Restart
Adds a column with checkboxes so that you can select multiple messages with only a mouse click.
xSearchbarT2 Requires Restart
Somewhere between Thunderbird 1.5 and Thunderbird 2 the message search bar disappeared. This extension restores the search bar. Thunderbird 2 and newer only.
Thunderbook Requires Restart
Export messages (including RSS items) as e-books.
AboutConfig Requires Restart
Trashcan Requires Restart
Have you ever accidentally deleted an event and didn't notice? Undo is no longer available? Then this extension is for you! All deleted items are put into a special Trashcan calendar for your safety.
Asciidoctor for Thunderbird Requires Restart
Type some text in your mail's body, hit the asciidoctor button and transform your mail into a pretty html5 asciidoctor document. Font awesome and code highlighting are enabled.
Message Notes Requires Restart
Add Notes to messages. Notes are stored in a plaintext file, typically in your profile. The plaintext notes file can be stored elsewhere to enable sharing of notes across a...
SMTP Switch Reborn Requires Restart
Automatically marks all messages in the [Gmail] folder and all subfolders as read.
FolderCheck Requires Restart
Allows you to easily tell Thunderbird to check multiple folders for messages
Fix Tb Titlebar Extension Requires Restart
You can now modify the Titlebar of TB's main...
Signal Spam Requires Restart
Add simple functions to report spams or phishing to Signal Spam by one click.
The add-on will also alert you if you open a fraudulent e-mail (phishing).
P7MON Requires Restart
Abilita la gestione alternativa degli allegati P7M
Tag the Bird Requires Restart
Tag the Bird gives the power of tagging to Thunderbird.