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Quote Colors & Collapse

Configure text and background colors of quotes in mail and news messages. From up addon version 3 (Thunderbird 91) you can collapse quotes.

Rated 5 out of 5 stars (7)
2,605 users
Updated Aug. 5, 2021

AttachmentExtractor Continued Requires Restart

This add-on is a (work in progress) fixed version of the original Add-on "AttachmentExtractor" which is no longer supported and fixed by the original author.

It Extracts all attachments from selected messages and then can delete, detach...

Rated 4 out of 5 stars (76)
6,100 users
Updated Aug. 4, 2021

Toggle Message Pane

Adds a Preview Button, toggles the message preview

Rated 5 out of 5 stars (6)
281 users
Updated Aug. 2, 2021

Phoenity Buttons

Adds some toolbar buttons using phoenity icons.

Rated 4 out of 5 stars (15)
3,615 users
Updated Aug. 2, 2021

Remove Duplicate Messages

Search and remove messages which are the same as other messages in your mail folders (referred to as duplicates or dupes).

Rated 4 out of 5 stars (254)
78,843 users
Updated Aug. 2, 2021

Folder Account

Lets you associate user accounts and identities with specific folders. Great for multiple users who share TB, or for managing mailing lists.

Rated 4 out of 5 stars (61)
2,404 users
Updated July 28, 2021

HERA - Hotel Email Reservation Assistant

HERA helps hotels to semi or fully automatically respond to emails by checking rates in your PMS / CRS

Not yet rated
2 users
Updated July 27, 2021

Thunderbird Conversations Featured

This addon provides a conversation view for Thunderbird, grouping messages together and allowing you to reply "inline" thus providing a more efficient workflow.

Rated 4 out of 5 stars (490)
26,265 users
Updated July 25, 2021

Manage and archive emails / Nostalgy++ for TB78

Shortcuts to move/copy/archive messages, with folder name completion.
Set rules for moving messages to associated folders.
Automatic rules by statistical observation.
View images inside TB without external viewer.

For v2.3/TB 78.11 see below

Rated 5 out of 5 stars (43)
2,717 users
Updated July 22, 2021

Allow HTML Temp

Allows to have HTML temporarily enabled (and displayed) in the currently selected message by only one click. When switching to another message, it'll be shown automatically again in plain text or simple html mode (according to your settings).

Rated 4 out of 5 stars (76)
10,000 users
Updated July 21, 2021

Get/Send Button

The add-on provides a combined Get and Send button with a context menu with additional features.

You may want to use it together with the following Add-ons:
* Send Later Button (by me / Alexander Ihrig)
* Send Later (by jikamens)

Rated 4 out of 5 stars (52)
7,102 users
Updated July 21, 2021

mailmindr

Follow up for Thunderbird E-Mails.

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

Rated 4 out of 5 stars (58)
1,314 users
Updated July 18, 2021

QuickFolders (Tabbed Folders)

The "Swiss army knife" of folders. Turn your favorites into tabs - open folders and subfolders, move mails without scrolling around or searching. powerful + easy.

See new mail at a glance after automatic filtering - supports quickFilters addon!

Rated 5 out of 5 stars (163)
19,787 users
Updated July 13, 2021

Select Inbox on Startup

Automatically select the Inbox folder at startup.

Rated 4 out of 5 stars (1)
13 users
Updated July 9, 2021

Compact Headers

Limits displayed headers to 1 or 2 lines.

Rated 4 out of 5 stars (32)
8,001 users
Updated July 7, 2021

Copy Sent to Current

Allows to place a copy of sent messages (aka FCC) into the currently active folder or any other folder you choose, when you create the message. Usually the copies are placed into the 'Sent' folder. For replies, you may also move the original message.

Rated 4 out of 5 stars (94)
1,780 users
Updated July 1, 2021

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 (93)
33,797 users
Updated June 24, 2021

ExQuilla for Exchange

Thunderbird email accounts connecting to Microsoft Exchange Web Services.

Rated 4 out of 5 stars (123)
9,390 users
Updated June 24, 2021

Sender Frequency

Adds a custom column for Sender Frequency to the thread pane

Rated 4 out of 5 stars (5)
335 users
Updated June 17, 2021

Seams

Seams provides some integration with Patchwork, the patch tracking system. It makes the patch state visible directly from Thunderbird. It also displays useful links to a Patchwork instance or to mail archives, and commands to apply the patch locally.

Rated 5 out of 5 stars (1)
13 users
Updated June 1, 2021