Miscellaneous

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AutoProxy-ng

This is a fork of AutoProxy, which can run the latest version of Firefox.

Rated 4 out of 5 stars (5)
1,659 users

Highlighter

Quickly highlight some text in Thunderbird message composing windows.

Rated 4 out of 5 stars (50)
10,412 users

Year view

Year view for calendar.

Rated 4 out of 5 stars (46)
5,131 users

Mail Redirect

Allow to redirect (a.k.a. "remail") mail messages to other recipients.

Rated 4 out of 5 stars (128)
40,559 users

Snap Links Plus

Select a number of links with a rectangle and open them all in new tabs in the same or a new window(s), download them or copy them to the clipboard. You can also lasso checkboxes to quickly check or uncheck them.

Rated 4 out of 5 stars (109)
29,829 users

Lightning Featured

Organize your schedule and life's important events in a calendar that's fully integrated with your Thunderbird email. Manage multiple calendars, create your daily to do list, invite friends to events, and subscribe to public calendars.

Rated 3 out of 5 stars (1,914)
6,482,425 users

tzpush

Z-Sync to Thunderbird Addressbook
Will sync Thunderbird address book to Zentyal, Zarafa, Horde and outlook.com/hotmail.

Rated 4 out of 5 stars (12)
2,160 users

SmartTemplate4

SmartTemplate4 offers an easy way to automatically create customized replies by auto-inserting various mail headers. Templates can be created for every account as well as for the default (all email accounts). Also supports the Stationery Add-on.

Rated 5 out of 5 stars (49)
21,436 users

Clean Subject

"Clean Subject" cleans the subject from multiple occurrences of subject prefixes such as ("Re: Re-2: Re:") and postfixes that are inserted by other clients. Words like "[SPAM]" can be cleaned as well. These prefixes can be defined in the preferences.

Rated 4 out of 5 stars (38)
4,147 users

Export for Thunderbird & Lightning Launcher

Export for Thunderbird & Lightning is the worldwide unique printing and exporting solution for Mozilla Thunderbird and Lightning for Windows.
Multi lingual user interface: English, German, French and Spanish

Rated 2 out of 5 stars (9)
1,456 users

SyncKolab

SyncKolab can synchronize your calendar, address book and tasks against an IMAP server in Kolab formats version 1 (vCard/iCal) or version 2 (XML) or turn your Thunderbird/Lightning into a native Kolab Client (http://kolab.org).

Rated 3 out of 5 stars (75)
7,483 users

Contact Photos

Displays contact photos in the message header.

Rated 4 out of 5 stars (22)
2,198 users

MinimizeToTray

Minimizes Mozilla windows into the system tray. Also includes a right clickable tray icon menu to further load only the windows you want visible...

Rated 4 out of 5 stars (466)
12,874 users

MinimizeToTray Plus

Note from Mozilla: This add-on has been discontinued. Try MinimizeToTray Revived instead.

Minimize applications to the system tray.

Rated 4 out of 5 stars (193)
16,616 users

elevenia

Instant access to your online shopping paradise. The more transaction you've made from our extension, the more point-cashback you'll get!

Rated 5 out of 5 stars (1)
1,726 users

gContactSync

Synchronizes contacts & groups between Thunderbird or SeaMonkey and Google Contacts. Imports Facebook friends, contacts you follow on Twitter, and more.

Rated 4 out of 5 stars (212)
87,041 users

Send Later

True "Send Later" functionality to schedule the time for sending an email.

Rated 5 out of 5 stars (45)
68,597 users

Extension List Dumper 2

This extension adds a button ("Dump list") to the Add-ons window. When this button is pressed, a new window is opened with the list of installed extensions, themes or plugins...

Rated 4 out of 5 stars (28)
1,054 users

Addons Recent Updates

Show more addons recent updates

Rated 5 out of 5 stars (9)
1,833 users

Send Filter

This add-on allows you run your message filters automatically on outgoing messages after sending. In other words, it's a outgoing filter for thunderbird and seamonkey.

Rated 4 out of 5 stars (38)
5,465 users