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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)
881 users

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Maximize Message Pane

Maximize message pane by collapsing the thread pane. You can read a message in larger area without opening a new message window...

Rated 4 out of 5 stars (35)
188 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)
754 users

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Phoenity Buttons

Adds some toolbar buttons using phoenity icons.

Rated 4 out of 5 stars (16)
4,239 users

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Layout Button

A toolbar button to switch between layouts.

Rated 5 out of 5 stars (6)
738 users

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Before Tabs Toolbar Requires Restart

Adds a toolbar before the tabs.

Rated 5 out of 5 stars (10)
67 users

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Enhanced Priority Display

Enhanced thread pane display of message priorities.

Rated 5 out of 5 stars (13)
125 users

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Exit Button Thunderbird Requires Restart

Adds a toolbar button to exit Thunderbird. Go to View menu, Toolbars, Customize... and drag the icon where you want...

Rated 4 out of 5 stars (12)
140 users

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More Snooze

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

Rated 5 out of 5 stars (10)
678 users

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Folder Filters Button Requires Restart

Just a very simple add-on that adds a toolbar button to execute the "Run Filters on Folders" from Tools menu.

Rated 5 out of 5 stars (36)
550 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)
141 users

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Delete Trash Button Requires Restart

Adds an Empty Deleted button to the Toolbar

Rated 4 out of 5 stars (10)
110 users

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Typical Reply Requires Restart

Provides ability to send/receive typical replies in a team.Provides ability to send/receive typical replies in a team.

Not yet rated
51 users

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Night and Day Dynamic

A theme that switches between sun and moon based on time of day.

This is the canonical example dynamic theme published by Mozilla: https://github.com/mdn/webextensions-examples/tree/master/dynamic-theme

Rated 3 out of 5 stars (2)
1,299 users

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TaskviewStyles

Change taskview styles.
Use justify button to read long sentences.
Executed well.

If coupling with TaskDescriptions, it is good enough!

To Hyun-geol who I like.

Not yet rated
10 users

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EnhancedReplyHeaders

Customizable headers for Thunderbird

Rated 4 out of 5 stars (6)
152 users

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Next Unread Group (Mark All Read)

Adds a Group button, marks current newsgroup or folder as read and moves to the next unread message

Rated 5 out of 5 stars (3)
111 users

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Simple Startup Minimizer

This extension will minimize Thunderbird on startup, it is very simple and I didn't put much work into it but it should work on all platforms. Please let me know if you want more features added into it.

Rated 4 out of 5 stars (30)
6,613 users

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Smileyfixer

Fixes smileys that show in emails created by Outlook as J.

Rated 5 out of 5 stars (4)
894 users

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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)
9,482 users

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