Search

Auto Compress File Requires Restart

Compressor for attachment files. All platforms are supported (Windows, Linux and Macintosh).

Rated 5 out of 5 stars (18)
615 users

Download Now

Metal Lion Silver Sea Monkey Requires Restart

Metal Lion meets SeaMonkey and makes it shine....

Rated 5 out of 5 stars (2)
38 users

Download Now

Brazilian Portuguese Dictionary (Former Spelling)

The same spellchecker shipped with the Brazilian version of Firefox, just using the former spelling (which is valid until January 1st 2016).

Rated 4 out of 5 stars (6)
743 users

Download Now

AddressBook in Tab Requires Restart

Adds a button that can be put in toolbars which opens the addressbook in a new tab like pastismans AddressBookTab

Rated 4 out of 5 stars (20)
118 users

Download Now

Romanian spellchecking dictionary

Romanian spellchecking dictionary for Firefox.

Rated 4 out of 5 stars (40)
3,864 users

Download Now

Nuvola TB Requires Restart

Theme based on the Nuvola icon set by David Vignoni (http://icon-king.com/?p=15).

You can find developer versions under http://mozilla.paenglab.ch/

Rated 5 out of 5 stars (69)
142 users

Download Now

Stylish-Custom Requires Restart

custom additions to Stylish extension

Rated 4 out of 5 stars (10)
6 users

Download Now

Markdown Here Requires Restart

Write your email in Markdown, then make it pretty.

Rated 4 out of 5 stars (46)
34 users

Download Now

Türkçe Yazım Denetimi

Türkçe Yazım Denetimi
Turkish Spellchecker

Rated 5 out of 5 stars (39)
1,845 users

Download Now

Emoji Menu Requires Restart

Adds the ability to easily insert emojis into your composed messages in Thunderbird.

Rated 4 out of 5 stars (16)
1,074 users

Download Now

German dictionary (de_AT)

German dictionary igerman98 (de_AT, Austria), for Firefox, Thunderbird und Seamonkey.

Rated 5 out of 5 stars (5)
2,846 users

Download Now

Walnut for Thunderbird Requires Restart

Walnut for Thunderbird, based on icons from art.gnome.org, and sporting a wooden look.
Supports Thunderbird versions 53.0 to 60.0. From version 61.0, Thunderbird will drop support for full custom themes.

Rated 5 out of 5 stars (41)
32 users

Download Now

Contact Photos Requires Restart

Displays contact photos in the message header.

Rated 4 out of 5 stars (31)
80 users

Download Now

tb_email_grabber Requires Restart

Very basic extension that exports all sender of mails in one folder into a CSV, which includes their fullname and email. The extension adds an option to the folder view context menu. Please select the folder to export before starting the export.

Rated 3 out of 5 stars (5)
5 users

Download Now

Croatian Dictionary (Hrvatski Rječnik)

Croatian Dictionary (Hrvatski Rječnik) for Mozilla Firefox, Thunderbird and SeaMonkey

Rated 5 out of 5 stars (9)
3,475 users

Download Now

Lithuanian spelling check dictionary

Lithuanian spellchecking dictionary for Mozilla applications. Included by default in Lithuanian localized versions of Mozilla software.

Rated 5 out of 5 stars (5)
2,844 users

Download Now

Black Oyster Requires Restart

A clean theme for Thunderbird with dark icons on a light background.

Rated 5 out of 5 stars (10)
1 user

Download Now

Lightbird Requires Restart

Standalone calendar UI for Lightning

Rated 4 out of 5 stars (21)
126 users

Download Now

Close Proxy Authentication Requires Restart

Provides transparent proxy authentication on your enterprise network.
Close authentication dialog if login on proxy failed.

Rated 5 out of 5 stars (5)
0 users

Download Now

Nautipolis for Thunderbird Requires Restart

Nautipolis for Thunderbird: High-quality, solid theme based on icons from art.gnome.org.
Supports Thunderbird versions 53.0 to 60.0. From version 61.0, Thunderbird will drop support for full custom themes.

Rated 5 out of 5 stars (26)
29 users

Download Now