Google and Zimbra contact sync for Thunderbird. (TB 24 and above NOT supported)
Quicktext is an extension for Thunderbird that lets you create templates that can be easily inserted into your own emails.
Did your friend send you a cool link? Want to read the rest of that interesting article? Don't want to open up your web browser just to view it? You don't have to! Just view it in Thunderbird with ThunderBrowse!
Search and remove messages which are the same as other messages in your mail folders (referred to as duplicates or dupes).
Allow to redirect (a.k.a. "bounce") mail messages to other recipients
Displays the address books in a sidebar in Thunderbirds 3-pane-window and can be toggled with the F4 key or a toolbar button.
Visit my Contacts Sidebar site for recent versions and news.
Extension to mimic Outlook Express Stationery.
Allow you to use HTML files as templates for mail. Also allow custom template in replies or forwarded mail!
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!
Allows for customization of the folder pane. Accounts can be rearranged and the startup folder can be chosen.
A complete redesign of popular Google services, Google Redesigned changes the appearance of popular Google services.
Extracts all attachments from selected messages and then can delete, detach or mark-read.
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. ...
Mozilla applications allow to select rows and columns from a table simply pressing Control key and picking rows/columns with left mouse button.
The selection can be copied to clipboard but the original table disposition is lost making ugly results wh...