[MlMt] rule for deleting messages

[Tim Lance]

I want to delete messages older than 30 days. Yes, I understand the 
implications but I am not a huge email user.

Best I can tell is I need to set a rule? I tried setting one for the 
“combined” mailbox: Deleted Messages. It does not work. I have 6 
IMAP accounts (5 gmail, 1 iCloud). I tried setting a rule for a 
particular mailbox in Deleted Messages. Nope.

Rule is if Date not within 30 days permanently delete.

Best!
tim