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DKIM Verifier Requires Restart

Verifies the DKIM-Signature of an e-mail.

Rated 4 out of 5 stars (12)
3,984 users
Updated September 28, 2016

Cyceam

Earn extra money while browsing online! Get rid of ads, and optionally tip your favorite sites.

Not yet rated
9 users
Updated September 27, 2016

Download Status Bar

If you are the kind of person who likes to have total control over every aspect of your downloads, "Download Status Bar" is the add-on you are looking for.

Rated 5 out of 5 stars (330)
230,483 users
Updated September 26, 2016

Auto Compress File Requires Restart

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

Rated 5 out of 5 stars (19)
5,215 users
Updated September 26, 2016

CardBook Requires Restart

A new Thunderbird address book based on the CardDAV and vCard standards.

Twitter : @CardBookAddon

Rated 4 out of 5 stars (74)
6,025 users
Updated September 26, 2016

Auto Resize Image Requires Restart

Resizer for inline and attachment images (JPEG, PNG, BMP and GIF image formats).
All platforms are supported (Windows, Linux and Macintosh).

Rated 4 out of 5 stars (26)
14,839 users
Updated September 26, 2016

Rspamd-spamness Requires Restart

Rspamd spam filtering system score visualization.

Not yet rated
67 users
Updated September 26, 2016

Theme Font & Size Changer

Theme Font & Size Changer lets you change the global font size and font family used for the user interface in Firefox. Design your browser with your favorite font.

Rated 5 out of 5 stars (227)
100,152 users
Updated September 25, 2016

uBlock Origin

Finally, an efficient blocker. Easy on CPU and memory.

Rated 5 out of 5 stars (657)
1,466,192 users
Updated September 25, 2016

Just Restart! Requires Restart

Restart application with Ctrl+Shift+Z.

Rated 5 out of 5 stars (4)
915 users
Updated September 24, 2016

ThunderTabs Requires Restart

This add-on is a button on your toolbar that lets you open web apps as Tabs in Thunderbird. Use it to load Google Mail, Google Wave, Google Voice, and other "inboxes" (or any url) as tabs within Thunderbird, making it your communications hub.

Rated 4 out of 5 stars (12)
422 users
Updated September 23, 2016

SmartTemplate4 Requires Restart

SmartTemplate4 offers an easy way to automatically create customized replies by auto-inserting various mail headers. Templates can be created for every account as well as for the default (all email accounts). Also supports the Stationery Add-on.

Rated 5 out of 5 stars (51)
19,865 users
Updated September 23, 2016

Thunderbird Integration for JIRA Requires Restart

This is a plugin for Thunderbird 3.3+ which is able to create Atlassian Jira issues out of e-mails or add the content of an e-mail as a comment on an Jira issue.

Rated 3 out of 5 stars (13)
474 users
Updated September 23, 2016

Blend In Requires Restart

Blends in OS-related values in User-Agent HTTP request header & a number of JS properties, so that Firefox (Thunderbird) appears to sites visited as running on the OS being used the most in the world. Thunderbird can also be blended in as Firefox.

Rated 4 out of 5 stars (10)
1,021 users
Updated September 23, 2016

Force RTL

Force a LTR locale to behave as if it was a RTL locale.

Rated 5 out of 5 stars (6)
201 users
Updated September 23, 2016

Colored Recipient Type Requires Restart

Customize background-color of the recipient address fields for each recipient types of To:, Cc:, Bcc:.Customize background-color of the recipient address fields for each recipient types of To:, Cc:, Bcc:.

Rated 5 out of 5 stars (1)
309 users
Updated September 23, 2016

Timer Fire Requires Restart

A simple tool to trigger some of the background timers.

Rated 5 out of 5 stars (1)
50 users
Updated September 22, 2016

HTTPS Everywhere Requires Restart

Encrypt the web! HTTPS Everywhere is a Firefox extension to protect your communications by enabling HTTPS encryption automatically on sites that are known to support it, even when you type URLs or follow links that omit the https: prefix.

Rated 4 out of 5 stars (113)
218,529 users
Updated September 22, 2016

NoiaButtons

The 'NoiaButtons' add-on offers cartoonish toolbar button icons (known from Noia themes) for default theme and lightweight themes. Further more lite silver and dark versions of Noia themes are included.

Rated 5 out of 5 stars (16)
16,042 users
Updated September 22, 2016

The Adblocker Project

A powerful ad blocker that blocks ALL ads but ads from publishers who shares revenues with targets YOU choose.

Rated 5 out of 5 stars (1)
29 users
Updated September 21, 2016