Top-Rated Extensions

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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.

Rated 3 out of 5 stars (3)
23 users

JS Deminifier

Simple JavaScript deminifier

Rated 3 out of 5 stars (3)
30 users

Event-to-task conversion activator Requires Restart

Activates the Event-Task conversion ability...

Rated 3 out of 5 stars (3)
1 user

MozLab Requires Restart

Remote shell and test-driven development tool for Mozilla developers

Rated 3 out of 5 stars (3)
7 users

Check Attachment before Send Requires Restart

Confirms to send a mail with any attachment.

Rated 5 out of 5 stars (1)
75 users

Address Move Button Requires Restart

Allow you to add a Address Move Button to mail compose window.

Rated 5 out of 5 stars (1)
3,170 users

QuickMultiselect Requires Restart

Adds a column with checkboxes so that you can select multiple messages with only a mouse click.

Rated 5 out of 5 stars (1)
140 users

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.

Rated 3 out of 5 stars (8)
39 users

Thunderbook Requires Restart

Export messages (including RSS items) as e-books.

Rated 5 out of 5 stars (1)
679 users

AboutConfig Requires Restart

about:config for...

Rated 3 out of 5 stars (13)
13 users

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.

Rated 3 out of 5 stars (6)
386 users

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.

Rated 5 out of 5 stars (1)
42 users

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...

Rated 3 out of 5 stars (10)
1 user

SMTP Switch Reborn Requires Restart

SMTP Chooser.

Rated 5 out of 5 stars (1)
309 users

Mark GMail Read

Automatically marks all messages in the [Gmail] folder and all subfolders as read.

Rated 3 out of 5 stars (5)
155 users

FolderCheck Requires Restart

Allows you to easily tell Thunderbird to check multiple folders for messages

Rated 3 out of 5 stars (5)
7 users

Fix Tb Titlebar Extension Requires Restart

You can now modify the Titlebar of TB's main...

Rated 3 out of 5 stars (5)
3 users

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).

Rated 3 out of 5 stars (42)
9,497 users

P7MON Requires Restart

Abilita la gestione alternativa degli allegati P7M

Rated 5 out of 5 stars (1)
4,911 users

Tag the Bird Requires Restart

Tag the Bird gives the power of tagging to Thunderbird.

Rated 3 out of 5 stars (14)
0 users