I know how to flag messages for follow up, but I was wondering if I could also flag messages to become “irrelevant” after a certain amount of days.

For instance; I’m reading a message now which holds relevant information for this week. After this week, I can get rid of the message. I know that if I somehow do not mark this message, it will stay in my mailbox a whole lot longer and I’ll need to reread the message in order to decide whether to keep it or not.

How can I mark a message, similar to flagging a message, as “irrelevant” after a certain date? Is it also possible to automatically delete it after this date?