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Phoenity Buttons

Adds some toolbar buttons using phoenity icons.

Rated 4 out of 5 stars (16)
4,355 users
Updated May 21, 2022

Allow HTML Temp

Allows to have HTML temporarily enabled (and displayed) in the currently selected message by only one click. When switching to another message, it'll be shown automatically again in plain text or simple html mode (according to your settings).

Rated 4 out of 5 stars (82)
10,759 users
Updated May 20, 2022

Auto-Mark Folder Read

New messages can be automatically marked as read in common folders (e.g. suspected spam, trash, drafts, templates).

Not yet rated
0 users
Updated May 20, 2022

Get/Send Button

The add-on provides a combined Get and Send button with a context menu with additional features.

Rated 4 out of 5 stars (55)
6,730 users
Updated May 20, 2022

CardBook Featured

A new Thunderbird address book based on the CardDAV and vCard standards.

Twitter: @CardBookAddon

Rated 4 out of 5 stars (375)
73,487 users
Updated May 20, 2022

Quicktext

Quicktext is an extension for Thunderbird that lets you create templates that can be easily inserted into your own emails.

Rated 4 out of 5 stars (422)
123,631 users
Updated May 20, 2022

FindTasksButton

1) Add Find Task button.
2) Add tasks filter menu list.
3) Add the menu list filtering tasks by priority.
4) Make sure of task tree array length and n-th record.

Hi, Mom.
I pray for my and your mother's good health.

From a middle-age son.

Not yet rated
63 users
Updated May 19, 2022

FrameWhite

Version 102.0 was released, At (re)starting Thunderbird, last theme persists.
I thank core developers who have developed and elaborated theme APIs.^^

send a gift to a friend Eunjo.

Rated 4 out of 5 stars (6)
548 users
Updated May 19, 2022

Mail Merge P

Mail Merge with Preview, an enhanced version of Mail Merge by Alexander Bergmann. MailMergeP Allows you to send bulk messages based on a spreadsheet of data.

Rated 3 out of 5 stars (8)
1,213 users
Updated May 18, 2022

Display Mail User Agent T Featured

Displays the mail program with which the selected mail was written

*This addon is compatible with Thunderbird after Web Extesnsions support. Since development and operation check are done on Daily, it may not work on normal Thunderbird.

Rated 5 out of 5 stars (17)
9,140 users
Updated May 17, 2022

Addon Compatibility Check for TB 102

Checks all installed add-ons for compatibility with Thunderbird 102 (next ESR) 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 5 out of 5 stars (3)
11,201 users
Updated May 16, 2022

QNote

Add notes to your e-mails. Drop-in replacement for XNote++ with more features.

Rated 5 out of 5 stars (44)
2,998 users
Updated May 16, 2022

regimail

AddOn for sending regimail with Thunderbird on Windows and Linux.

*IMPORTANT:*
In order to use this AddOn, you need to install the regify client on your system and configure it with a valid regify account.

Not yet rated
2 users
Updated May 16, 2022

Outlook/Teams Appointments

Get the hidden appointment from an email from outlook/teams as a .ics-file - Icon: https://fontawesome.com/

Rated 4 out of 5 stars (7)
3,319 users
Updated May 15, 2022

acus

Modern encryption in Thunderbird

** Currently in testing phase **
What you can do:
1. Set your secret key in the addon's tab page and acus will automatically decrypt incoming emails
2. Generate a new key pair
3. Encrypt plain text

Not yet rated
2 users
Updated May 14, 2022

Quote Colors & Collapse

Configure text and background colors of quotes in mail and news messages. From up addon version 3 (Thunderbird 91) you can collapse quotes.

Rated 5 out of 5 stars (9)
3,708 users
Updated May 14, 2022

Textmarker

Highlights selected text when composing emails. Default colour is yellow - other colours are available via Options.
(Works only during writing an e-mail, i.e. only in the compose window.)

Rated 5 out of 5 stars (24)
8,456 users
Updated May 12, 2022

AddAccents

This extension allows you to easily insert accented characters as you type in firefox or thunderbird. It is similar to abctajpu (no longer supported). With the default settings, simply press "e" followed by "\" to insert "é" "a\" to insert "à" etc...

Not yet rated
3 users
Updated May 11, 2022

Rspamd-spamness

Rspamd spam filtering system score visualization.

Rated 4 out of 5 stars (6)
900 users
Updated May 11, 2022

Received

Displays the "Received" header parsed with a regular expression.

Rated 5 out of 5 stars (4)
109 users
Updated May 11, 2022