Thunderbird Add-ons

by Patrick

11 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.

Provider for Google Calendar by Philipp Kewisch

Rated 4 out of 5 stars 964 reviews

348,060 users

Allows bidirectional access to Google Calendar

Addressbooks Synchronizer by Guenter Gersdorf

Rated 4 out of 5 stars 59 reviews

37,738 users

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

Remove Duplicate Messages by Thorsten W. Schmidt

Rated 4 out of 5 stars 138 reviews

43,485 users

If you have duplicate messages (e.g. from merging folders or downloading messages several times) you can use this tool to find and remove them from the selected folder and its subfolder by rightclicking on a folder and choosing "Remove duplicates..."

ThunderBrowse by GS! Networks

Rated 3 out of 5 stars 150 reviews

11,949 users

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!

Get/Send-Button by Alexander Ihrig

A combined Get/Send-Button and a popup menu with additional functions.

You may want to use it together with the following Add-ons:
* Send Later Button (by me / Alexander Ihrig)
* Send Later (by jikamens)

ThunderBirthDay by ingomueller.net

Rated 4 out of 5 stars 78 reviews

15,937 users

Display birthdays from the Thunderbird addressbooks as events in Lightning.

Update Notifier by Todd Long

Rated 5 out of 5 stars 162 reviews

146 users

Note from Mozilla: This add-on has been discontinued. Try Add-on Update Checker instead.

Notifies you when updates are available for your extensions and themes.

Attachment Sizes by Frank DiLecce

Rated 4 out of 5 stars 57 reviews

192 users

Ability to see attachment sizes ...

Unselect Message by Michael Buschbeck

Rated 4 out of 5 stars 29 reviews

8 users

Prevents Thunderbird from selecting the next message after you've deleted or moved the previously selected ones. Stay in control of which message you want to have selected and displayed in the preview pane; that piece of spam you're deleting...

Delete Junk Context Menu by chuonthis

Rated 4 out of 5 stars 8 reviews

25 users

Adds 'Delete Mail Marked as Junk' to folders' right click...

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