Top-Rated Extensions
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Nostalgy Requires Restart
Keyboard shortcuts to change folder, move/copy messages, with folder name auto-completion.
Saved Password Editor Requires Restart
Adds the ability to create and edit entries in the password manager.
Element Hiding Helper for Adblock Plus
Fight the text ads! Element Hiding Helper is a companion extension for Adblock Plus meant to make creating element hiding rules easier.
Macro Template
Macro Template is to replace mail templates with macros for date formatting.
Archive This Requires Restart
Provides keyboard shortcuts for filing messages into nine configurable "favorite" folders using user-defined keys. Also provides a simple filter system with a keyboard shortcut to file the currently selected message(s) into the correct folder.
Sender Address Columns Requires Restart
Adds optional columns to the Thread Pane to allow sorting email messages by:
* Full sender address -- e.g. "someone@example.com"
* Sender's domain -- e.g. "example.com"
* Sender's local part -- e.g. "someone"
* Sender's TLD -- e.g. ".com"
No Message Pane Sort
No Message Pane Sort prevents accidental resorting of the message pane by disabling mouse button clicks on the column headers, thus, locking the sorting order of your emails.
It is still possible to sort messages by ctrl-clicking the header.
Join-NG Requires Restart
Join partial messages. Somewhat similar to MS Outlook Express "combine and decode".
Stop Ignoring Reply:To Requires Restart
Default "Reply" functionality pays attention to "Reply-To" in original email
Emoji
It permits just with a single click to copy an emoji.
There is a search-box and the "Most used emojis" section (the first one).
If you want to send feedback or report bug, please go to https://github.com/Sav22999/emoji
userChromeJS
Load the contents of chrome/userChrome.js from the user's profile directory every time a window is opened. Also add a toolbar button which reloads userChrome.js in the current window.
ConfirmFolderMove Requires Restart
Introduces a preference that allows users to be prompted before moving folders.
MoreLayouts
Adds additional Wide Thread View and Stacked View to Thunderbird along with Reversed views. Plus configurable Fullscreen F11 and Message Pane F8 toggles. Also starring Vertical Tabs.
To create your own collections, you must have a Mozilla Add-ons account.