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Clacks Overhead
In tribute to the late Sir Terry Pratchett, many users are adding the message "GNU Terry Pratchett" into the email header "X-Clacks-Overhead". Clacks Overhead shows users when this appears in their emails and displays the message included.
English (US) Dictionary
This add-on repackages the en-US dictionary available in mozilla-central, which uses the normal (size 60) word list by SCOWL and integrates it with over 6 thousand words.
StandardTexter
With the help of this Add-on, up to 99 pre-made texts (standard texts, text modules or even signatures) can be stored, which can then be retrieved and inserted when writing an e-mail.
The texts can be preformatted with HTML.
uBlock Origin
Finally, an efficient blocker. Easy on CPU and memory. uBlock Origin (uBO) is a CPU and memory-efficient wide-spectrum content blocker that blocks ads, trackers, coin miners, popups, annoying anti-blockers, etc. in your feeds.
selectAll Button
This Add-on installs a button on the mail toolbar that will when clicked select all messages within the folder.
Toggle Summary
Český slovník pro kontrolu pravopisu (CC0)
Experimentální český slovník pro kontrolu pravopisu.
Send Later Button
The Send Later Button extension enhances Thunderbird by enabling 'Send Later' even in online mode. It supports many Languages, ensuring a seamless user experience.
See: https://github.com/That-Developer-Guy/Send-Later-Button-Thunderbird/
TimetableForWeb
Display just previous schedule.
Update current time schedule.
Good to update future schedule too.
I thank God through Jesus Christ.
Mongolian Spellchecking Dictionary
Articles Toolbar
Open Image In New Tab
Google Keep - Quick Access
Quick Access to Google Keep in a new tab with just one click on a simple, stylish icon button on your Spaces toolbar.
Auto Avatars
Automatically populates contact photos with their Libravatar or Gravatar photo. Includes support for custom instances and federation!
Bugmail Revived
WebExtension implementation of the original add-on by Fabrice Desré and Colin Guthrie.
This replaces earlier releases by the original authors and a "fixed version" which existed for Thunderbird 68–73.
Paste Excel Table into Mail Compose
Paste Excel tables directly into Thunderbird emails at the cursor. Preserves layout when possible, works with a toolbar button or Ctrl+Q shortcut, and auto-detects Excel data. Simple, fast, and no MS Word needed.
CrossWeird-Puzzle
Find, select & drag words from your emails. Solve tech-themed puzzles. 21 puzzles, 3 levels, email-only input validation & more to discover. Perfect for Thunderbird users who like productivity & ..fun?
Made by Michael 'ThunderBard' Ellis.
ThunderFeed - Read Email Like RSS
Transform email folders into Hey.com-like RSS-style reading experience. Read your emails like a news feed - scroll through messages in a continuous stream, and they're automatically marked as read as you scroll past them
Copy Email Folder
This extension allows you to automatically copy email messages from one folder to another with all subfolders and perform a merge of the contents. It is a helpful tool for users who want to back up or sync folders but avoid duplicating emails.
To create your own collections, you must have a Mozilla Add-ons account.
