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FileLink provider for Send
Securely encrypt and upload large attachments to any Send service instance (formerly Firefox Send).
Microsoft 365 Link Opener
Open a shared link of a SharePoint or OneDrive file directly with the right app, instead of the browser.
Open Google Keep
British-English Dictionary (GB)
A strict British-English spell checker dictionary for Firefox, Thunderbird and SeaMonkey. This dictionary only includes words conforming to the preferred standard of British-English spelling.
External Editor Revived
Spellchecker Rumantsch Sutsilvan
Mail Extractor
Mail Extractor for Thunderbird quickly extracts and copies email addresses from selected messages. It now also downloads attachments as ZIP files.
Customoji
Adds easy custom emojis to Thunderbird.
NOTE: you need to add the emojis yourself in the extension settings
GroupMe - Web Tab
Beeper Thunderbird Add-on
A simple add-on with a button in the Spaces toolbar.
I created this by reverse engineering one of the many good add-ons in the Mozilla store and replaced the URL with chat.beeper.com and a logo.
Requires an account with beeper.com
Thunderpocket
Speichere Links aus Thunderbird-E-Mails in Pocket. Klicke einfach mit der rechten Maustaste auf einen Link, logge dich ggf. ein und - zack - fertig!
Todoist - Quick Access
Quick Access to Todoist in a new tab with just one click on a simple, stylish icon button on your Spaces toolbar.
Ogden's Basic English Dictionary for Media
Requires Restart
A spell checker for Ogden's Basic English.
Tok Pisin spell checker
Requires Restart
This is a spell checker for Tok Pisin based on a word list created by Helge Søgaard.
FrameWhite
FrameWhite version 128.1 was released, Thunderbird never drop down the letter.
Install Theme 1 or more, And then, manage FrameWhite, so that action is allowed.
send this gift to a friend Eunjo.
FileLink Provider for OwnCloud and NextCloud
Uploads your large attachments to your OwnCloud or NextCloud server and instead inserts a public link into your email.
Dictionnaire occitan languedocien
Corrector ortografic en occitan lengadocian per Thunderbird.
Correcteur ortographique en occitan languedocien pour Thunderbird.
telegramwebapp
Adds browser action icon to toolbar to open Telegram. See https://thunderbird-essentials.thomas-bandl.de/wordpress/2020/10/04/telegram-button/
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.
Compact HeadersTo create your own collections, you must have a Mozilla Add-ons account.
