Rated 5 out of 5 stars

Από τον/την Franks στις Ιούλ. 7, 2015 · μόνιμος σύνδεσμος

Yes, Extra Folder Columns is built in now, but in order to enable it you must modify with config editor the key

mail.folderpane.showColumns and set to true

ARB suggests to go to Options -> Layout -> click Folder Pane Columns but the option does not exist.