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QNote

Add sticky notes to your emails with this feature-rich, drop-in replacement for the XNote++ extension.

Rated 5 out of 5 stars (65)

5,643 users

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...

Rated 5 out of 5 stars (3)

174 users

Reply with subaddress

Reply to a message that was sent to a subaddess with the same address.

Example: Your primary email is tim@mymail.tld, you receive a mail to the subaddress tim+mailinglists@mymail.tld, the sender of replies is set to tim+mailinglists@mymail.tld.

Rated 3 out of 5 stars (3)

64 users

telegramwebapp

Adds browser action icon to toolbar to open Telegram. See https://thunderbird-essentials.thomas-bandl.de/wordpress/2020/10/04/telegram-button/

Rated 3 out of 5 stars (2)

97 users

*cloud - FileLink for Nextcloud and ownCloud Featured

Upload large attachments to your Cloud and send the link by email

Rated 5 out of 5 stars (51)

35,313 users

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 (13)

5,208 users

wikipediasearchwebapp

Adds browser action icon to toolbar to open Wikipedia-Search. See http://thunderbird-essentials.thomas-bandl.de/wordpress/2020/10/05/wikipedia-suche-button/

Not yet rated

12 users

Compact Headers

Limits displayed headers to 1 or 2 lines.

Rated 4 out of 5 stars (69)

11,494 users

CatchAll Bird

This extension improves the use of CatchAll-Addresses with Thunderbird.
It handles incoming messages addressed to all prefix@domain.tld for a fixed domain.
For each prefix the AddOn can create a new identity and folder.

Rated 5 out of 5 stars (4)

97 users

keepassxc-mail

MailExtension to get password from KeePassXC.

Rated 4 out of 5 stars (7)

1,317 users

Archive 3 Month

Archive messages that are older than 3 months in inbox and sent folder

Not yet rated

32 users

Link Creator

Open selected URIs, URLs, e-mail addresses, telephone numbers and links.

Rated 5 out of 5 stars (1)

891 users

Google Chat Tab

Open Google Chat in a Thunderbird Tab.

Update: 3 Dec 2024 -
Literally all this extension does is to open Google Chat in a separate tab. Thank you for all your kind comments! I made this to scratch an itch and I'm glad it has helped so many :)

Rated 4 out of 5 stars (11)

1,574 users

RT Archive Emails to Sugar & SuiteCRM

Archive Emails from Thunderbird to a Sugar or SuiteCRM record of your choice with RT Archive Email.
You can archive one or more emails, along with their attachments, to a Contact, Lead, Account, Opportunity, or Project.

Rated 4 out of 5 stars (5)

78 users

Start with Inbox

Selects the latest message in the Inbox after start of Thunderbird.

Rated 4 out of 5 stars (20)

2,020 users

TaskviewGridLayout

TaksviewGridLayout works in Thunderbird version 78.0~102.*.
If clicking any task after (re)starting Thunderbird, it PERSISTs.

REQUIREMENTS:
1. 1920 x 1080 RESOLUTION
2. 100% MAGNIFICATION

Praise Stephen Kim Sou-hwan.

April 2nd 2023.

Rated 1 out of 5 stars (1)

4 users

Dictionnaire occitan languedocien

Corrector ortografic en occitan lengadocian per Thunderbird.
Correcteur ortographique en occitan languedocien pour Thunderbird.

Not yet rated

15 users

Skiff Mail - Quick Access

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

Not yet rated

4 users

Whatsapp - Quick Access

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

Rated 5 out of 5 stars (2)

673 users

Tuta Mail - Quick Access

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

Not yet rated

222 users