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Evernote Tab

Add a button and a menu to open Evernote in tab.

Rated 3 out of 5 stars (9)
403 users

Toggle Quotes (Collapse Quotes)

Adds a Toggle Quotes button, allows to collapse quotes.

Rated 4 out of 5 stars (1)
150 users

Macro Template

Macro Template is to replace mail templates with macros for date formatting.

Rated 5 out of 5 stars (9)
446 users

Tidybird

Organize email into folders quickly and easily.

Rated 4 out of 5 stars (19)
209 users

iOS IMAP Notes

This addon allows to edit notes iOS notes within TB. The legacy version was mostly based on code derived from the "Header Tools Lite" by Paolo Kaosmos and OPTO. The WebExtension version for TB 115 and later was created with support from John Bieling.

Rated 4 out of 5 stars (11)
163 users

NestedQuote Remover

Remove nested quotes when replying to a mail.

Rated 4 out of 5 stars (13)
959 users

Single Domain

Warns if you send mail from or to a specified domain. If there are multiple accounts in your profile, you can isolate one so that you can't send mail to that domain from outside or vis versa without warning.

Rated 5 out of 5 stars (4)
86 users

Expertspam

Report spam, false-positives or phishing back to your antispam provider.

Rated 2 out of 5 stars (11)
143 users

Received

Displays the "Received" header parsed with a regular expression.

Rated 5 out of 5 stars (4)
136 users

filemail

Move mails to the same folder where previously mails have been moved from this author by hitting a single key

Rated 4 out of 5 stars (16)
67 users

RemindIt

Help in reminding mails to be answer or sent again. Choose a reminder date for each received or send message that are highlighted in the message list, depending on their status (expired, soon to exprire, to be reminded). Sending a reminder is eased.

Rated 3 out of 5 stars (27)
624 users

Mail Sent Notifier

Allows to notify a HTTP-GET based webservice after successfully sent an email, e.g. for time registration systems.

Not yet rated
59 users

URL Link

URL Link is a small Thunderbird extension that allows you to select a non-URL in a mail/news message or web-page, and open it in a browser window.

Rated 4 out of 5 stars (6)
1,938 users

Open With

Open With can open your web links in any browser installed on your computer.

*Open With is no longer maintained.*

Rated 3 out of 5 stars (24)
903 users

White Screen

Use white screen test to detect dead pixels, stuck pixels, and other display defects.

Not yet rated
13 users

Black Screen

Use black screen test to detect dead pixels, stuck pixels, and other display defects.

Not yet rated
30 users

Mark GMail Read

Automatically marks all messages in [Gmail] folder as read.

Rated 5 out of 5 stars (1)
100 users

Night and Day Dynamic

A theme that switches between sun and moon based on time of day.

This is the canonical example dynamic theme published by Mozilla: https://github.com/mdn/webextensions-examples/tree/master/dynamic-theme

Rated 3 out of 5 stars (2)
1,235 users

EagleCloud Extension

Works along with EagleCloud Information Security product to secure sensitive information based on company policy.

Not yet rated
2 users

Markdown Here Revival

A revival of the popular Markdown-Here addon for Thunderbird 115 and beyond.

Markdown Here Revival is a Thunderbird extension that lets you write emails in Markdown and render them as HTML before sending.

Rated 4 out of 5 stars (18)
1,242 users