In Thunderbird I set my "saved" folder to be my Inbox, so that all related messages are together, and when I'm visually searching for something I see it no matt

In Thunderbird I set my "saved" folder to be my Inbox, so that all related messages are together, and when I'm visually searching for something I see it no matter who sent it. In Outlook I do similar, but I have incoming messages redirected to my Sent folder, because you can't (I think) change where sent messages are saved. "It's Sent, why would you want sent messages to go anywhere else?"