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Rescue Conflicting Alternatives

Renders conflicting alternative bodies if the message has them.

Not yet rated
40 users

Copy Message ID

Adds a button to the message view toolbar to copy the message ID to the clipboard. This is useful when sending email replies via the command line.

Rated 5 out of 5 stars (3)
333 users

Colored Diffs

Color diffs sent by SVN/CVS/GIT/Mercurial...

Rated 4 out of 5 stars (20)
574 users

Auto Select Latest Message

Automatically select and display latest message from the list on startup or when switching folder.
Remember last opened message in "smart" folder

Rated 4 out of 5 stars (42)
144 users

More Snooze

This add allow to customize the snooze delay when snooze popup appears (lightning required).

Rated 5 out of 5 stars (10)
726 users

Evernote Tab

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

Rated 3 out of 5 stars (9)
487 users

Macro Template

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

Rated 5 out of 5 stars (9)
520 users

Tidybird

Organize email into folders quickly and easily.

Rated 4 out of 5 stars (19)
303 users

AlertSwitch

Simply turn on or turn off the alerts shown & sounds played when new message arrives.

Rated 3 out of 5 stars (7)
744 users

NestedQuote Remover

Remove nested quotes when replying to a mail.

Rated 4 out of 5 stars (13)
1,082 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)
100 users

Toggle Headers

Allows to switch between the normal header view and viewing all headers when viewing a message by using a keyboard shortcut (Ctrl+H).

Rated 4 out of 5 stars (12)
1,310 users

Expertspam

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

Rated 2 out of 5 stars (11)
162 users

Received

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

Rated 5 out of 5 stars (4)
158 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)
80 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)
755 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
66 users

Dark Reader

Dark mode for every email. Take care of your eyes, use dark theme for night and daily messaging.

Rated 4 out of 5 stars (38)
9,962 users

Markdown Here Revival

A revival of the popular Markdown-Here addon for Thunderbird 78 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)
1,609 users

Message Mover

This add-on lets you move messages from a specific folder (and sub-folders) to a new folder.

Rated 4 out of 5 stars (7)
400 users