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 55 reviews

484,929 users

German Dictionary (new Orthography) for spellchecking in Mozilla products

Signature Switch by Achim Seufert

Rated 4 out of 5 stars 169 reviews

92,201 users

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

Remove Duplicate Messages (Alternate) by eyalroz

Rated 4 out of 5 stars 142 reviews

68,157 users

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

Addressbooks Synchronizer by Guenter Gersdorf

Rated 4 out of 5 stars 57 reviews

35,510 users

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

Folderpane Tools by chuonthis, Philip Chee

Rated 4 out of 5 stars 122 reviews

41,211 users

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

Custom Buttons by Yan, cubegm, others

Rated 4 out of 5 stars 88 reviews

79,862 users

Gives a possibility to create custom toolbarbuttons...

Display Mail User Agent by Jürgen Ernst

Displays icon for user agent of received mails.

Nostalgy by Alain Frisch

Rated 5 out of 5 stars 144 reviews

9,552 users

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

Mnenhy by Karsten "Mnyromyr" Düsterloh

Rated 4 out of 5 stars 37 reviews

3,582 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.

Custom Buttons² by SCClockDr, nicholasalipaz, others

Rated 4 out of 5 stars 75 reviews

620 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...

Buttons! by chuonthis

Rated 4 out of 5 stars 63 reviews

1,818 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...

Display mailing list header by Jürgen Ernst

Rated 3 out of 5 stars 6 reviews

472 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.

CuteMenus - Crystal SVG by mrtech, Static_Nexus, others

Rated 4 out of 5 stars 103 reviews

5,248 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...

Attachment Sizes by Frank DiLecce

Rated 4 out of 5 stars 56 reviews

2,692 users

Ability to see attachment sizes ...

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