Add-ons
Message and News Reading
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Signature sync for Gmail
This extension allows you to automatically use your signature from Gmail accounts in Thunderbird. No longer need to maintain two separated signatures!
QuickFolders (Tabbed Folders)
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!
Show Address Only
Requires Restart
Adds columns to display Sender/Recipients mailaddress only.
MailHops
MailHops maps the route an email took to get to you. Displaying the senders location, weather, user-agent and authentication used.
Phoenity Buttons
Compact Headers
Folder Pane View Switcher
Folder view arrows; switch to "All Folders" view when hovering during drag & drop; allow user to select which views are enabled or tied to the view arrows.
LookOut (fix version)
LookOut decodes winmail.dat (TNEF encoded) files that may come from a misconfigured Microsoft Exchange server or Outlook user allowing access to the original attachments
Support: Thunderbird
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.
LastColour
Requires Restart
Colour your text to the "last-picked" colour you chose in the colour-picker. Now you don't have to use the colour picker every time.
Gather the senders !
Requires Restart
Select all the mails in a directory sent by the selected authors.
Spam Scores
Displays spam scores according to mail headers. Supports spam/ham score headers of Rspamd, SpamAssassin and MailScanner. The add-on adds a column with the overall spam score to the mail list view and shows details of any matched spam/ham rule.
Reply To All Reminder
Requires Restart
Asks for confirmation when "Reply" instead of "Reply to All" is pressed on an email with multiple recipients.
NewsWorthy for Thunderbird 1.5
Requires Restart
Making Thunderbird newsworthy (Usenet client support)...
ThunderPEC
Requires Restart
ThunderPEC semplifica la gestione della Posta Elettronica Certificata (PEC) e delle comunicazioni PCT e FatturaPA in Thunderbird.
Viadeo Tab
Requires Restart
Cette extension ajoute le réseau social français, Viadeo, un bouton d'accès à ouverture simple et rapide dans Thunderbird.
D'autres médias sociaux sont disponibles également.
Mutt Keys
Requires Restart
Creates Mutt like key bindings for Thunderbird. Inspired by the mouseless extension.
Archived-At
Requires Restart
Add menu items for copying Archived-At (RFC 5064) URLs from emails
Remove Duplicate Messages
Requires Restart
If you have duplicate messages (e.g. from merging folders or downloading messages several times) you can use this tool to find and remove them from the selected folder and its subfolder by rightclicking on a folder and choosing "Remove duplicates..."
MuteThread
Requires Restart
For a long time, Thunderbird has supported ignoring threads in newsgroups. This is a prototype that explores bringing that functionality to email.
To create your own collections, you must have a Mozilla Add-ons account.
