Nother silly Q?

Greetings all;

debian bullseye, useing new kmail-5.15.3

Where does one configure kmail to save sent messages? I just found it 
hasn't saved a single message I've sent in the last 3 weeks? It was ok I 
think up till then. WTH?

Thanks for any bailout.

Cheers, Gene Heskett.
-- 
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author, 1940)
If we desire respect for the law, we must first make the law respectable.
 - Louis D. Brandeis