Message and News Reading
This extension allows you to manually sort (order) your folders in the folder pane of Thunderbird or automatically sort them, but in a better way. This extension also allows you to re-order accounts in the folder pane.
LookOut is a plugin which allows Thunderbird to interface with Microsoft's mail tools by decoding metadata and attachments encapsulated/embedded in a TNEF encoded attachment (aka winmail.dat).
Search and remove messages which are the same as other messages in your mail folders (referred to as duplicates or dupes).
Allows you to use your Exchange and Office365 email account with Thunderbird using Outlook Web Access (OWA).
Thunderbird Conversations Featured
This addon provides a conversation view for Thunderbird, grouping messages together and allowing you to reply "inline" thus providing a more efficient workflow.
CompactHeader Requires Restart
Add symbol in header plane to switch between compact and expanded view. Work only for Thunderbird 68.0 and older. Currently, there are no plans to update this for newer versions.
Persistent sticky notes for Thunderbird associated to mails. You can email them/print/copy to clipboard.
If you have a large screen, you can even display the notes outside of TB's main window, so it won't hide anything.
The best Translator for Thunderbird!
The "Swiss army knife" of folders. Turn your favorites into tabs - open folders and subfolders, move mails without scrolling around or searching. powerful + easy.
See new mail at a glance after automatic filtering - supports quickFilters addon!
Add simple functions to report spams or phishing to Signal Spam by one click.
The add-on will also alert you if you open a fraudulent e-mail (phishing).
Mailbox Alert allows you to specify, for each seperate mail folder, a message, sound and/or a system command that will be executed when new mail is found there. ...
Add as many local folders as you want to.
New folders can reside on mapped or network locations.
New 68/78 version !
Message Printing Tools (NextGen)
PrintingTools NG provides numerous layout and formatting options for
printing messages with header sorting, attachment lists, borders etc.
Allows to have HTML temporarily enabled (and displayed) in the currently selected message by only one click. When switching to another message, it'll be shown automatically again in plain text or simple html mode (according to your settings).
Limits displayed headers to 1 or 2 lines.
Thunderbird email accounts connecting to Microsoft Exchange Web Services.
This module allows you to change/edit email subjects
When filing messages, a search box will show up allowing you to quickly enter the folder name you want to move to.
If no search term is entered, a list of recent folders will show up instead.
The add-on provides a combined Get and Send button with a context menu with additional features.
Account Colors Requires Restart
Associates user-defined colors with POP3/IMAP accounts and identities. Applies these colors to accounts, identities, folders, message list, message headers and compose headers. Users will always know which accounts/identities they are working with.