Windows 10 reached EOS (end of support) on October 14, 2025. If you are on Windows 10, see this article.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More
Archived

Customize Thunderbird UI

Mapenzi replied
Tsss Teas

Hi, Is it possible to change the Thunderbird folder pane (folderTree) appearance to look like the Thunderbird 102 style shown in your screenshot (smaller, more compact, and using simpler icons). Like imge below this


I using thunderbird version 115.10.1 and i try use CustomCSSforTb but it only change icon and colors. I cant change the tree folder style.

Hi, Is it possible to change the Thunderbird folder pane (folderTree) appearance to look like the Thunderbird '''102''' style shown in your screenshot (smaller, more compact, and using simpler icons). Like imge below this I using thunderbird version '''115.10.1''' and i try use [http://example.com CustomCSSforTb] but it only change icon and colors. I cant change the tree folder style.
Attached screenshots

All Replies (2)

PS: Edit link CustomCSSforTb

You can customise View, Density and Font size in the Thunderbird main window by clicking on the "App Menu Button" ≡ in the upper right corner and using the items in the drop down menu (image)