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Show Outlook Appointments (vcal / ics) Requires Restart

An extension to show embedded Outlook calendar (vcal / ics) parts.

Thunderbird doesn't show calendar parts from Outlook appointment emails. This addon adds a button to download the embedded appointment as ICS to import it into another calendar.

Rated 3 out of 5 stars (2)
985 users
Added Jan. 7, 2019

Owl for Exchange

Allows you to use your Exchange email accounts that use Outlook Web Access (OWA) with Thunderbird

Rated 5 out of 5 stars (10)
2,256 users
Added Oct. 20, 2018

Seturgent Requires Restart

Sets the urgent flag (X11) of the Thunderbird window under Linux in case of new messages. Does ignore special folders like Drafts, Junk and such.

Rated 5 out of 5 stars (2)
41 users
Added Aug. 21, 2018

Unmangle Outlook Safelinks Requires Restart

Users of Office 365 Advanced Threat Protection wil change
all url's in emails to redirect them to an Microsoft filter before opening.

This plugin wil change the url back to the original value.

Rated 4 out of 5 stars (1)
170 users
Added June 28, 2018

Bugmail (fixed version) Requires Restart

A bugzilla companion (fixed version). Originally maintained by Fabrice Desré.

Not yet rated
33 users
Added April 6, 2018

Send to Things for Thunderbird Requires Restart

Create a new Things task from the current email you are viewing. Opens the quick add dialog with subject and message content pre-filled.

I've created this add-on as a user of Things, it is not created or endorsed by Cultured Code.

Rated 4 out of 5 stars (1)
98 users
Added Feb. 12, 2018

Remote Content By Folder Requires Restart

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.

Rated 3 out of 5 stars (2)
71 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)
301 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.

Rated 5 out of 5 stars (2)
681 users
Added June 14, 2017

Message Title Header

Show a title header above messages.

Rated 1 out of 5 stars (1)
10 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
6 users
Added Dec. 29, 2016

New Thread To All Requires Restart

If you always have the same email recipient lists for your projects, this button may be the right thing for you.

It creates a new mail compose window with to, cc, bcc filled with names from the currently viewed email, but empty body, subject.

Not yet rated
36 users
Added Nov. 2, 2016

Reply As Original Recipient Requires Restart

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

Rated 4 out of 5 stars (6)
343 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.

Rated 5 out of 5 stars (2)
308 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 5 out of 5 stars (9)
547 users
Added Aug. 26, 2016

Image Zoom (ugly fixes) Requires Restart

An ugly attempt at fixing Image Zoom

Rated 4 out of 5 stars (17)
97 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 (33)
104,435 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)
3 users
Added March 28, 2016

Sender Frequency Requires Restart

Adds a custom column for Sender Frequency to the thread pane

Rated 4 out of 5 stars (4)
225 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)
38 users
Added Feb. 20, 2016