On Mon, 19 Aug 2019 09:50:56 +0100, Peter Humphrey wrote: > ferret out where kmail is vulnerable to its own data structures. I've found (as have others) that filtering the Inbox into many sub-folders seems to randomly cause dupicate emails to occassionally appear. However, the Kmail 5.11.0 here on Mageia-7 is otherwise quite steady. Regards, -- /\/\aurice