On: Thunderbird Starts Working on Improving Its Interf...

[savolai]

On my laptop the default whitespace is too much, as well. The white space is adjustable in userChrome.css, which, to my understanding from the instructions, you need to edit anyway.

Compact spacing:

  --folder-tree-row-height: 20px;

  --message-list-row-height: 20px;