Thunderbird

by Mac4Lin

23 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.

United States English Spellchecker by jooliaan

Rated 4 out of 5 stars 159 reviews

426,862 users

United States English Spellchecker for Firefox, Thunderbird and SeaMonkey by Kevin Atkinson and Geoff Kuenning.

To enable, right-click in a multi-line text box, select "Languages", then "English (United States)".

Provider for Google Calendar by Philipp Kewisch

Rated 4 out of 5 stars 1,035 reviews

312,054 users

Allows bidirectional access to Google Calendar

Enigmail by Patrick Brunschwig

Rated 4 out of 5 stars 192 reviews

150,193 users

OpenPGP message encryption and authentication for Thunderbird and SeaMonkey.

Toolbar Buttons by Michael B.

Rated 4 out of 5 stars 322 reviews

108,201 users

Adds toolbar buttons to the customize toolbar window in several programs including Firefox, Thunderbird and SeaMonkey. Some of the buttons make commonly preformed actions quicker, others add new functionality.

Silvermel by ShareBird

Rated 5 out of 5 stars 585 reviews

44,793 users

A Creamy Silvery Experience

Stationery by Arivald

Rated 4 out of 5 stars 108 reviews

35,637 users

Extension to mimic Outlook Express Stationery.
Allow you to use HTML files as templates for mail. Also allow custom template in replies or forwarded mail!

Zindus by Leni Mayo

Rated 4 out of 5 stars 207 reviews

24,499 users

Google and Zimbra contact sync for Thunderbird. (TB 24 and above NOT supported)

Display Mail User Agent by Jürgen Ernst

Displays icon for user agent of received mails.

Check and Send by H.Ogi

Rated 4 out of 5 stars 31 reviews

24,134 users

Check the message contents and addresses before you send the message...

Walnut for Thunderbird by alfredkayser

Rated 5 out of 5 stars 29 reviews

11,367 users

Walnut for Thunderbird, based on icons from art.gnome.org, and sporting a wooden look. Fully compatible with from 5.0 upto latest nightly build (currently 27.0a1). Full support for Lightning/calendar.

Allow HTML Temp by Alexander Ihrig

Rated 4 out of 5 stars 59 reviews

10,943 users

This Add-on allows to have HTML temporarily allowed in the currently displayed message by only one click. When switching to another message, it'll be shown automatically again in plain text or simple html mode (if this is your default mode).

EMail Address Crawler by CySlider

Rated 4 out of 5 stars 92 reviews

2,815 users

Automatically fill your address books or send mass mails with e-mail addresses extracted from all your e-mails.

Correct Identity by Dennis Verspuij

Rated 4 out of 5 stars 95 reviews

6,518 users

Ever sent mail from the wrong email address because you forgot to select the correct identity in the compose window?

iLeopard Mail by REO-2007

Rated 4 out of 5 stars 118 reviews

3,751 users

It is a Theme of the Mac Leopard-style which did iLeopard in a model.
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