447 votes179 comments · Outlook for Windows (Desktop application) » General · Flag idea as inappropriate… · Admin →
An error occurred while saving the commentNicholas King commented
The fonts and spacing on the Folder pane are too large. Please provide a "tighter spacing" option for the Folder pane as you have done for the message Pane, or else allow formatting options so a more compact Folder pane can be made.
I found the folder pane in Outlook 2010 perfectly usable and visible and is much more compact than in Outlook 2019.
Alternatively, make the folder pane variable size depending on the number of folders / sub-folders. If there are only a few a large font is OK but if many go automatically more compact so all folders still visible (down to a minimum size option.