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New Tab Button

It provide you the following functionalities:
* Open a selected message in a tab by a toolbar button
* Open a message in a tab by double-clicking its header view (disabled by default)
* Hide Lightning's Today Pane on opening a tab

Rated 4 out of 5 stars (9)
929 users

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ToggleReplied

Enables toggling of replied and forwarded states of messages.

Rated 5 out of 5 stars (8)
301 users

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Show InOut

Adds some columns to the tableview. One shows an indicator wether a mail is incoming or outgoing, other shows the sender, the recipient(s) or the correspondent(s). Columns can be shown as name only, address only or both.

Rated 5 out of 5 stars (40)
854 users

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Phoenity Buttons

Adds some toolbar buttons using phoenity icons.

Rated 4 out of 5 stars (16)
4,548 users

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mailmindr

Follow up for Thunderbird E-Mails.

Web: https://mailmindr.net/
Twitter: @mailmindr

Rated 4 out of 5 stars (76)
3,412 users

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Rescue Conflicting Alternatives

Renders conflicting alternative bodies if the message has them.

Not yet rated
41 users

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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)
342 users

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Colored Diffs

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

Rated 4 out of 5 stars (20)
582 users

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Evernote Tab

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

Rated 3 out of 5 stars (9)
493 users

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Toggle Quotes (Collapse Quotes)

Adds a Toggle Quotes button, allows to collapse quotes.

Rated 4 out of 5 stars (1)
147 users

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Macro Template

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

Rated 5 out of 5 stars (9)
525 users

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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)
192 users

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NestedQuote Remover

Remove nested quotes when replying to a mail.

Rated 4 out of 5 stars (13)
1,106 users

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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)
103 users

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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)
1,325 users

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Expertspam

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

Rated 2 out of 5 stars (11)
165 users

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Received

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

Rated 5 out of 5 stars (4)
159 users

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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)
76 users

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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)
753 users

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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
67 users

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