[Users] New mail indicator not working

[Bob Williams]

I have two IMAP accounts set up. One is with my ISP (Gradwell) and the
other is a Gmail account. The ISP account shows the correct information
in the New, Unread and Total columns in the folder list pane. The Gmail
account only seems to show Unread and Total and does not use the New
column.

Any clues, please?

Bob
-- 
Bob Williams
   System:  Linux 4.1.20-11-default
   Distro:  openSUSE 42.1 (x86_64)
   Desktop: KDE Frameworks: 5.21.0, Qt: 5.5.1 and Plasma: