Add-ons
Message and News Reading
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AttachmentCount
Adds a column to the Thunderbird message list to always display the true attachment count. An icon is shown for single attachments or all attachments deleted/detached. Tooltip preview of single attachment content and summary for multiple attachments.
Audio Preview
Adds a preview for audio files (wav, ..) to the message view, so it can be played directly.
Auto Select Latest Message
Automatically select and display latest message from the list on startup or when switching folder.
Remember last opened message in "smart" folder
Auto Zip Attachments
Requires Restart
Auto Zip Attachments allows you to easily compress (zip) attachments.
Autocopy 78+
Autofile - fast e-mail to folder filing
Read an e-mail, hit Autofile button and it is filed / moved to the right mail folder based on the sender's address. No drag/drop needed. Autofile can discover folders to store each author mail. Will save you lots of time like defunct filemail.
Autohide Folders panel
Requires Restart
Extension automatically hides the folders panel. The folder panel can be seen by placing the mouse pointer in the left corner of the window or by Accel-1 shortkey.
AutoProxy
Requires Restart
Are you concerned about your privacy? Or, are you blocked from some websites by a firewall? And, are you arming yourself with a proxy? In that case, AutoProxy is designed for you! A tool to help you use your proxy automatically & efficiently.
AutoRssDeleter
Requires Restart
Deletes rss message if the website link was clicked while Ctrl holding
AutoSlide
The AutoSlide addon automatically moves the splitter between the thread and the message pane in Thundbird so that the thread pane is set to a optimal height.
Avans Imap-account setup
Awesome Auto Archive
Automatically do Archive/Copy/Delete/Move actions based on user defined rules
Bamboo Feed Reader
Requires Restart
Feed reader | RSS - ATOM - OPML
This extension has NOT been rewritten with the new WebExtensions API (Firefox Quantum).
No future version is planned by the original developer.
Bamboo is still running with Palemoon.
Batch Copy
Requires Restart
Batch Copy creates a local copy of your IMAP account, copies all messages and maintains folder structure. Batch Copy can run incrementally to copy only new messages.
BetterUnsubscribe
Adds a convenient button to the navigation bar, appearing whenever an unsubscribe option is detected in an email.
BiDi Mail UI
Bigger Toolbar Buttons
Requires Restart
Forces all/any toolbar button icons to be displayed at 38x38 pixels (instead of the default 20x20 pixels). Small icons are displayed at their default size. Works with nearly all themes.
Birdbox
Bookmarks: eMails and XNotes - Quick 'Jump To'
Bookmark Toolbar and Menu for easy switching to emails and XNotes.
While you can already 'star' or 'tag' emails, they are still hidden in their (deeply nested?) folder and are not in direct daily view.
Bookmark them!
To create your own collections, you must have a Mozilla Add-ons account.
