Thunderbird

by Arno Nym

15 Add-ons in this Collection

Lightning by Mozilla Calendar Project

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.

German Dictionary by KaiRo

Rated 4 out of 5 stars 54 reviews

475,992 users

German Dictionary (new Orthography) for spellchecking in Mozilla products

Remove Duplicate Messages (Alternate) by eyalroz

Rated 4 out of 5 stars 145 reviews

73,048 users

Search and remove messages which are the same as other messages in your mail folders (referred to as duplicates or dupes).

Signature Switch by Achim Seufert

Rated 4 out of 5 stars 180 reviews

91,181 users

Switch the signature on/off or choose a new one from your predefined set...

Addressbooks Synchronizer by Guenter Gersdorf

Rated 4 out of 5 stars 58 reviews

39,393 users

Synchronizes selected addressbooks with other instances of thunderbird
using ftp/webdav/imap servers

Custom Buttons by Yan, cubegm, others

Rated 4 out of 5 stars 111 reviews

65,547 users

Gives a possibility to create custom toolbarbuttons...

Display Mail User Agent by Jürgen Ernst

Displays icon for user agent of received mails.

Folderpane Tools by chuonthis, Philip Chee

Rated 4 out of 5 stars 122 reviews

35,956 users

Allows for customization of the folder pane. Accounts can be rearranged and the startup folder can be chosen.

Nostalgy by Alain Frisch

Rated 5 out of 5 stars 147 reviews

10,018 users

Keyboard shortcuts to change folder, move/copy messages, with folder name auto-completion.

Display mailing list header by Jürgen Ernst

Rated 3 out of 5 stars 6 reviews

394 users

This extension implements RFC 2369 for Thunderbird: Special mailing list header fields in the mail are parsed, and the links are displayed in the extended header view. You can click them to simply go to the archive, request help or unsubscribe.

Mnenhy by Karsten "Mnyromyr" Düsterloh

Rated 4 out of 5 stars 41 reviews

2,961 users

The primary goal of the Mnenhy project is to make some enhancements to SeaMonkey MailNews/Thunderbird, since there're still plenty of comfort functions missing if compared to Netscape 4.x and other mail and news clients.

CuteMenus - Crystal SVG by mrtech, Static_Nexus, others

Rated 4 out of 5 stars 103 reviews

3,231 users

Note from Mozilla: This add-on has been discontinued. Try Menu Icons Plus instead.

Adds icons to all menus along with some other features...

Buttons! by chuonthis

Rated 4 out of 5 stars 63 reviews

1,458 users

Adds buttons to the Thunderbird toolbars such as Next! and Previous! buttons for navigating through all messages instead of just unread ones. See homepage for more...

Attachment Sizes by Frank DiLecce

Rated 4 out of 5 stars 56 reviews

2,348 users

Ability to see attachment sizes ...

Custom Buttons² by SCClockDr, nicholasalipaz, others

Rated 4 out of 5 stars 75 reviews

430 users

The Custom Buttons² Firefox extension provides the code base support necessary to create, maintain, import, and export custom toolbar buttons. The buttons can perform just about any task, with a large number of buttons already available on the exte...

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