Freron MailMate

I have many smart mailboxes which use the "date-received is (not) within last ..." as one of the conditions. A few of those check for old messages in the trash, I delete after x months, or for old mailing list posts, which I apparently did not care to check within past x months. In those cases, having MM checking the timestamps all the time seems like an overkill. Once or twice a day would suffice. I therefore suggest to add a new parameter for the "date-received is (is not) within last ..." condition that allows us to set the frequency of the checks. I trained myself to wait until the count in those mailboxes exceeds 100 before I act, but it would also make my maintenance simpler (less cognitive effort, if you will) if I had to attend to those mailboxes only once a day, for example.