Appearance and Customization

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Add Microsoft Office 365 Tabs to Thunderbird! Services supported by M-Hub Lite: Calendar, People, OneDrive, Word, Excel, PowerPoint, & Bing. Need business or enterprise support? Get M-Hub Pro: https://www.schiffner.com/index.php/software/m-hub-pro

Not yet rated
7 users
Added Oct. 3, 2019

OppositeTodaySubpane Requires Restart

Today subpane is a emblem of Thunderbird.
When today pane is hidden for a wide view,
someone feels sorry not to have this today subpane on screen.
It is to remain today subpane on folder and subscription pane.
send a gift to a friend Eunjo.

Not yet rated
8 users
Added Aug. 17, 2019

TaskviewLayout

Put task view up to read document of long sentences.
Put task view neutrally to read tree lists.
Put task view vertically to read document in which records are many.
praise Cardinal Soo-Hwan, Kim.

Rated 1 out of 5 stars (2)
18 users
Added Aug. 9, 2019

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 4 out of 5 stars (1)
308 users
Added July 27, 2019

Phoenity Icons Requires Restart

Phoenity icons for Thunderbird

Rated 5 out of 5 stars (2)
544 users
Added July 12, 2019

Disable DragAndDrop (Thunderbird) Requires Restart

Disable drag and drop on the folder tree in order to prevent unintended folder movement.

Rated 5 out of 5 stars (1)
93 users
Added July 6, 2019

Enhanced Date Formatter Requires Restart

Configure the 'Date' and 'Received' columns and displayed date in the message pane using custom formats. You can even use different date formats for emails with today's date, yesterday's date, dates in the last week, or dates older than a week.

Rated 5 out of 5 stars (10)
164 users
Added June 24, 2019

PasteMarkdownSyntax Requires Restart

Paste Markdown syntax on event and task dialog descriptions.
Items are:
'**', '```', '###', '~~', '----', '|---', '|---|', '---|', '|:---|', '|:---:|', '|---:|', '![alt text]( )'
praise Cardinal Soo-Hwan, Kim.

Not yet rated
12 users
Added June 18, 2019

FrameWhite Requires Restart

Add Switch white button on menu for switch between default and white themes.
Enjoy white without eye fatigue! Change it to default theme to have the other themes.
send a gift to a friend Eunjo.

Not yet rated
1 user
Added June 1, 2019

userChromeJS Requires Restart

Load the contents of chrome/userChrome.js from the user's profile directory every time a window is opened.
This is an attempt to re-implement the old userChromeJS extension to make it compatible with Thunderbird 60+.

Rated 4 out of 5 stars (1)
48 users
Added April 1, 2019

Colored Folders Requires Restart

INFO: New version will be out approx. 1st week of october!
Keep the Addon installed and the update will be delivered automatically!

Add colors to your folders in Thunderbird!
Must-have for better organisation + intuitive and speedy workfow...

Rated 5 out of 5 stars (44)
9,693 users
Added Jan. 8, 2019

BorderColors D Requires Restart

Shows a colorful border around the "New Message" window, so you can tell different identities apart.

Builds on the original BorderColors and the "GT" version, adding different border styles.

Rated 4 out of 5 stars (5)
2,018 users
Added Nov. 17, 2018

Hide Caption Titlebar Plus ⁴

⦁ NEW! Floating Toolbars & Menus with autohide!
⦁ "Maximize your screen content space by adjusting window TitleBar, Tabs, Toolbars, etc!".
⦁ Multiple Configurable Actions for both screen-corner buttons: Application/'Home' & Close buttons!

Not yet rated
117 users
Added Sept. 29, 2018

MinimizeToTray Reanimated Requires Restart

MinimizeToTray Reanimated is an application mainly dedicated to Thunderbird to allow its minimization in the systray in one click. It is the update of MinimizeToTray Revived, which is not maintained anymore since the recent versions of Thunderbird.

Rated 5 out of 5 stars (105)
21,246 users
Added Sept. 12, 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)
28 users
Added Aug. 21, 2018

YNote Requires Restart

Make some text notable on the each folder in folder's property dialog box.

Rated 5 out of 5 stars (1)
6 users
Added July 31, 2018

Theme Font & Size Changer (fixed)

Fixed version (no 90 day timer till silent failure) of the popular "Theme Font & Size Changer for Thunderbird" addon

Rated 4 out of 5 stars (41)
20,156 users
Added April 9, 2018

Send to Internals Requires Restart

Provides a special button to send mail to internals. "Internals" may be company, organization, or user group and so on.

Not yet rated
6 users
Added March 5, 2018

Force Hide Message Pane Requires Restart

Force hide message pane at startup.

Not yet rated
5 users
Added Jan. 18, 2018

Switch Link External Handler Requires Restart

Provides abilities to switch external handlers to open links.

Not yet rated
2 users
Added Jan. 18, 2018