Up & Coming Extensions
ShowIP Requires Restart
Show the IP address of the current page in the status bar. It also allows querying custom information services by IP (right click) and see location and avaiable vouchers for shopping sites. Additionally you can copy the IP address to the clipboard.
IMAP Received Date Requires Restart
Make the “Received” column in IMAP folders show when messages were actually received.
Integrate QR codes for calendar events into tooltips for easy transfer to mobile devices.
BlunderDelay Requires Restart
Thunderbird Extension: AutoSend Unsent Messages. Flushes entire outbox at regular intervals.
Year view Requires Restart
Year view for calendar.
Copy As Plain Text Requires Restart
Removes formatting from copied text.
NestedQuote Remover Requires Restart
Remove nested quotes when replying to a...
Mail Summaries Requires Restart
Adds a summary of mail accounts and folders to replace the account central pane and the empty folder preview
ThunderPlunger Requires Restart
This add-on provides a few new ways to keep Thunderbird clean.
Copy Plain Text 2 Requires Restart
Copies text without formatting
ThunderSync Requires Restart
Allows to synchronise Thunderbird's addressbook with external directories/files. Every contact is exported/compared with an external file. Right now, only vCard version 2.1 is supported as export file format.
Encrypt if possible Requires Restart
Sets message security option "encrypt message", if valid X509 certificates are found for all recipients.
ReminderFox Requires Restart
ReminderFox displays and manages lists of reminders and ToDo's. ReminderFox makes sure you remember all of your important dates via easy-to-use lists, alerts, and alarms, right in your browser without the need for a separate calendar program.
Windows Contacts Loader Requires Restart
Loads Windows Contacts from Windows 7 or Vista in a Thunderbird Address Book called "Windows".
addressContext Requires Restart
An extension to add addressbook-related options to the context...
Show Address Only Requires Restart
Adds columns to display Sender/Recipients mailaddress only.
Filter Uploader for Adblock Plus Requires Restart
DOES NOT BLOCK ADS! Don't install this add-on if you don't know what 'uploading' means!
This add-on Uploads the filters from your Adblock Plus installation to a FTP, HTTP, HTTPS server...
Google+ Tab Requires Restart
Google+ Tab for Thunderbird
ThunderBirthDay Requires Restart
Display birthdays from the Thunderbird addressbooks as events in Lightning.