Search

SpamTester

SpamTester allows you to test the spam score of your email using popular anti-spam software (SpamAssassin, Rspamd...). This is useful to know if your email will fall into the recipient's spam (or even get your mail server blocked).

Rated 3 out of 5 stars (1)
205 users

Console messaging example

Console messaging example add-on

Not yet rated
3 users

Header Tools Improved

Allows to modify headers and source of messages

Rated 5 out of 5 stars (41)
2,677 users

Open in browser

A context menu item to open the links associated with feed items in the default browser and then mark them as read.

Rated 5 out of 5 stars (1)
345 users

Archive old messages

A context menu item to archive all messages than older than a given duration.

Not yet rated
491 users

Addon Compatibility Check for TB 102/TB 115/TB 128

Checks all installed add-ons for compatibility with Thunderbird 128 (or TB 102/115) and displays status information on a button in the main toolbar. This button will open a detailed overview, including links to alternatives for abandoned add-ons.

Rated 4 out of 5 stars (12)
14,926 users

Config Button

Adds a Config button, opens about:config in a tab.

Rated 5 out of 5 stars (3)
1,497 users

FileLink for Plik

Plik no longer offers uploads without an account. So the add-in currently only works for self-hosted instances of the software. Currently I cannot promise a date for a fix. Sorry.

Rated 5 out of 5 stars (4)
3,391 users

Filter Manager

Adds a Filters Button, opens Filter Manager

Rated 5 out of 5 stars (7)
2,155 users

ReplyAsOriginalRecipientUp

When you reply to a mail sent to your personalized address (postfix/qmail/gmail extensions) such as john.doe+contactname@example.com, "From:" is replaced by your personalized address rather than your simple address.

Rated 5 out of 5 stars (12)
961 users

Metamorfik

The Altium Forums are the best way to participate in discussions, share tips, ask/answer questions and locate resources.

Not yet rated
1 user

Antidote connector for Thunderbird

Integrate Antidote with Thunderbird to proofread your emails, check your spelling and grammar, and consult the dictionaries and language guides. Get alerted to abrasive tone and missing attachments before sending a message.

Not yet rated
960 users

Mark Subfolders Read

Adds a context option to folders for marking all contents of the selected folder and all subfolders as read.

Rated 4 out of 5 stars (3)
105 users

Zulip - Quick Access

Quick Access to Zulip in a new tab with just one click on a simple, stylish icon button on your Spaces toolbar.

Not yet rated
5 users

Webpage Opener

Adds a button to the toolbar to open a user defined webpage.

Rated 5 out of 5 stars (1)
38 users

Thunderbird Send [stage]

[Alpha Testing] Thunderbird send allows sending and receiving end to end encrypted files.

This add-on is undergoing testing and not yet available to the general public.

Rated 1 out of 5 stars (1)
29 users

AutoZoom

AddOn to save a text zoom for eMail text editor.

Rated 4 out of 5 stars (3)
140 users

Antispam

Sending email to the Antispam database

Not yet rated
20 users

SimpleLogin - Easy Reach

An extension for Thunderbird that allows you to access SimpleLogin.

Not yet rated
13 users

OWUI - Quick Access

This extension adds a simple button to your Spaces toolbar that opens in a new tab, providing you with one-click access to your Open WebUI Instance.

Not yet rated
4 users