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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 4 out of 5 stars (9)
806 users

No tabs

Hides the tab bar and automatically removes all inactive tabs everytime a tab is opened or switched to.

Rated 5 out of 5 stars (7)
161 users

ShowContactFoto

Displays the contact photo/image/picture of the sender/recipients while reading/composing message.
Images are taken from local image files or Address Book (see addon's options page).

Rated 4 out of 5 stars (2)
39 users

Aranese spell checker

Aranese (Occitan) spell checker - Diccionari ortogràfic d'Aranés

Not yet rated
11 users

ThunderThings

Integration between Thunderbird and Cultured Code's Things application.

Rated 4 out of 5 stars (3)
10 users

sms77

Send SMS via sms77

Not yet rated
77 users

Send Unsent Mail Button

Toolbar button to send unsent messages.

Rated 5 out of 5 stars (2)
270 users

Send then Archive

Automates the process of archiving a message that has been replied to.

Rated 2 out of 5 stars (5)
28 users

Aify

Rewrite or generate text based on promps using OpenAI's API.

Configure on settings page (make sure to save) and start to use when writing your emails!

You must have a payment method on record with OpenAI and an API key. OpenAI charge for use.

Rated 5 out of 5 stars (10)
357 users

Filter Manager

Adds a Filters Button, opens Filter Manager

Rated 5 out of 5 stars (7)
1,928 users

Thunderbird Send

[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)
20 users

AutoZoom

AddOn to save a text zoom for eMail text editor.

Not yet rated
8 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 (37)
2,430 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

Uzbek (uz) Language Pack

Uzbek (uz) Language Pack

Not yet rated
13,092 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)
300 users

Message Header Toolbar Customize

You can change icon display and button order. You can also hide unnecessary buttons.

Rated 5 out of 5 stars (51)
4,790 users

Archive old messages

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

Not yet rated
401 users

Telegram Web in Thunderbird

Open Telegram Web in Thunderbird

Rated 5 out of 5 stars (5)
730 users