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Remote Content By Folder

Decide whether to allow or block remote content in messages by comparing the names of the folders in which they are located to configured regular expressions.

Not yet rated
17 users
Added Sept. 9, 2017

ToggleReplied Requires Restart

Enables toggling of replied, forwarded, and redirected states of messages.

Rated 4 out of 5 stars (2)
57 users
Added Aug. 17, 2017

attachment column in search result list Requires Restart

Show the column for attachments in search results list. General search (edit-> search -> search emails) does not show by default if a message has attachments.
This addon adds this column, just as in a normal folder view.

Not yet rated
265 users
Added June 14, 2017

Message Title Header

Show a title header above messages.

Rated 1 out of 5 stars (1)
88 users
Added June 10, 2017

Delete Read Emails Requires Restart

Adds a button in Thunderbird's toolbar that enables you to delete all your read emails at once

Not yet rated
54 users
Added Dec. 29, 2016

Reply As Original Recipient Requires Restart

Reply with the From: field set to the To: field from the original email.

Rated 5 out of 5 stars (2)
195 users
Added Oct. 17, 2016

Reply To All Reminder Requires Restart

Asks for confirmation when "Reply" instead of "Reply to All" is pressed on an email with multiple recipients.

Not yet rated
215 users
Added Oct. 8, 2016

Checkbox Column Requires Restart

Adds a custom column to Thunderbird's messages list (thread tree), making it easier to select multiple messages on devices with a touchscreen display.

Rated 4 out of 5 stars (4)
333 users
Added Aug. 26, 2016

Image Zoom (ugly fixes) Requires Restart

An ugly attempt at fixing Image Zoom

Rated 4 out of 5 stars (15)
3,131 users
Added Aug. 9, 2016

LookOut (fix version) Requires Restart

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).
Support: Thunderbird and SeaMonkey

Rated 4 out of 5 stars (14)
51,982 users
Added June 24, 2016

Lowercase Email Addresses in Message Headers Requires Restart

Shows lowercase email addresses in message headers and their tooltips.

Rated 1 out of 5 stars (1)
36 users
Added March 28, 2016

Sender Frequency Requires Restart

Adds a custom column for Sender Frequency to the thread pane

Rated 5 out of 5 stars (3)
130 users
Added March 7, 2016

Classic Pop-up Alerts

This addon returns the old view of the pop-up notifications, as in Firefox 4.0 - 43.0

Rated 3 out of 5 stars (2)
664 users
Added Feb. 20, 2016

Email Addresses in Message Headers Requires Restart

Shows email addresses in message headers, including those of contacts, and provides control over message header presentation.

Rated 3 out of 5 stars (2)
288 users
Added Feb. 13, 2016

Rspamd-spamness Requires Restart

Rspamd spam filtering system score visualization.

Not yet rated
483 users
Added Dec. 29, 2015

DisableChunks Requires Restart

The addon modifies the mail.imap.min_chunk_size_threshold preference value by setting it to 100000000.
It is a workaroud to bug 1216951

Not yet rated
117 users
Added Nov. 18, 2015

Hide Badge Icon Requires Restart

Hides the badge for new messages of the Thunderbird app icon on Mac OSX.

Not yet rated
7 users
Added Nov. 8, 2015

ThunderBird Ticker Requires Restart

Extension for creating support tickets based on mail.

Not yet rated
9 users
Added Sept. 10, 2015

SecondOpinion Requires Restart

This extension implements a convenient way to check and upload attachments against VirusTotal.com

Rated 4 out of 5 stars (2)
295 users
Added June 19, 2015

Feedly Synchronizer

Synchronize your favorite RSS sources with Thundebird and Feedly

Rated 4 out of 5 stars (9)
315 users
Added June 15, 2015