How do I see my account avatars in the local mail list?

Since some time my account avatars in the local email list disappeared and I cannot find any way to activate them again. Not in the options list for the columns, and I could not find a way in any setting option.

Account avatars are only visible in unified folders like the Favorites Unread, All Inboxes, etc. If they are not showing in those Favorites folders, right-click on the column row header and choose Columns Configuration. Move the Account Icon item from the left to the right column.

Gary, thanks for the hint!
To see the account icons in other folders I just replicated the column structure from a unified folder to the others. Problem solved!