Featured Add-ons for Thunderbird

by Mozilla

16 Add-ons in this Collection

Adblock Plus by Wladimir Palant

Rated 5 out of 5 stars 4,302 reviews

18,411,947 users

Blocks annoying video ads on YouTube, Facebook ads, banners and much more.

Adblock Plus blocks all annoying ads, and supports websites by not blocking unobtrusive ads by default (configurable).

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.

Image Zoom by Jason Adams

Rated 4 out of 5 stars 310 reviews

201,231 users

Adds zoom and rotation functionality for images...

Enigmail by Patrick Brunschwig

Rated 4 out of 5 stars 159 reviews

147,054 users

OpenPGP message encryption and authentication for Thunderbird and SeaMonkey.

LookOut by Aron Rubin

Rated 4 out of 5 stars 134 reviews

166,782 users

LookOut is a plugin which allows Thunderbird to interface with Microsoft's mail tools by decoding metadata and attachments encapsulated/embedded in a TNEF encoded attachment (aka winmail.dat).

TT DeepDark by steva

Rated 5 out of 5 stars 99 reviews

47,182 users

Smooth dark theme for Thunderbird
• Firefox version available here

Extra Folder Columns by Joey Minta, Standard8

Rated 4 out of 5 stars 168 reviews

198,746 users

This extension is for those TB3 users who want the multiple-columns view that TB2 allowed

Silvermel by ShareBird

Rated 5 out of 5 stars 513 reviews

85,151 users

A Creamy Silvery Experience

Mail Merge by Alexander Bergmann

Rated 5 out of 5 stars 114 reviews

40,721 users

Mass Mail and Personal Mail

Signature Switch by Achim Seufert

Rated 4 out of 5 stars 143 reviews

87,636 users

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

Zindus by Leni Mayo

Rated 4 out of 5 stars 196 reviews

51,122 users

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

Mail Redirect by Pawel Krzesniak, Onno Ekker

Rated 4 out of 5 stars 106 reviews

27,578 users

Allow to redirect (a.k.a. "bounce") mail messages to other recipients

ThunderBrowse by GS! Networks

Rated 3 out of 5 stars 128 reviews

32,603 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!

CompactHeader by jmozmoz

Rated 5 out of 5 stars 147 reviews

171,028 users

Add symbol in header plane to switch between compact and expanded view. Options to switch between one or two lines compact view, which buttons should be displayed in header pane. Linkify RSS subject. Optionally darkens header if message has focus.

Contacts Sidebar by Jeroen Peters

Rated 4 out of 5 stars 223 reviews

40,407 users

Displays the address books in a sidebar in Thunderbirds 3-pane-window and can be toggled with the F4 key or a toolbar button.

Visit my Contacts Sidebar site for recent versions and news.
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