Recently Updated Extensions
Confirm-Address Requires Restart
Confirm E-mail address before sending mail
Adds two columns to the list of mails. One shows an indicator wether a mail is incoming or outgoing, the other shows the sender or the recipient of the mail respectively...
QuickFolders (Tabbed Folders) Requires Restart
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!
Open With Requires Restart
Quickly test out your web pages in Chrome, Edge, Safari, or Opera. Open With opens the current page in your other browsers with just two clicks. Donate here: https://darktrojan.github.io/donate.html?openwith
LookOut (fix version) Requires Restart
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).
Support: Thunderbird and SeaMonkey
ThunderBirthDay Requires Restart
Display birthdays from the Thunderbird addressbooks as events in Lightning.
Highlighter Requires Restart
Quickly highlight some text in Thunderbird message composing windows.
Decide whether to allow or block remote content in messages by comparing the names of the folders in which they are located to configured regular expressions.
FiltaQuilla Requires Restart
Adds many new mail filter actions - launch a file, suppress notification, remove star or tag, mark replied or unread, copy as "read", append text to subject.
Add menu commands for replying to multiple messages at the same time.
Mail Redirect Requires Restart
Allow to redirect (a.k.a. "remail") mail messages to other recipients.
Send Later Requires Restart
True "Send Later" functionality to schedule the time for sending an email.
Join-NG Requires Restart
Join partial messages. Somewhat similar to MS Outlook Express "combine and decode".
Show contact photo and other info from Local Dir, Addressbook, LDAP, Facebook, LinkedIn, Flickr, Gravatar etc
Display Mail User Agent Requires Restart
Displays icon for user agent of received mails.
Shrunked Image Resizer Requires Restart
Make your photos smaller, so they don't take forever to email or send to websites.
This extension is not being converted to a WebExtension.
Enhanced Priority Display Requires Restart
Enhanced thread pane display of message priorities.
IMAP Received Date Requires Restart
Make the “Received” column in IMAP folders show when messages were actually received.
ToggleReplied Requires Restart
Enables toggling of replied, forwarded, and redirected states of messages.
Smiley Fixer Requires Restart
Fixes Wingding Smileys in Outlook-generated emails