As a full timer my mailing address is basically a shoebox (Post Office box but not at a post office, it's at a "PO BOX store" I call 'em long about the 20'th and they send me a "Care" package,,, all my mail for the month.
When I part timed I had a trusted friend collect the mail monthly and forward in pre-paid mail envelopes (experess mail) Worked great for the most part.. Till said friend went hospial and I missed a month.
Basically I don't get much mail I need to attend to and most of that is fraud as it turns out.. Oh the occasional doctor's bill or statement, but that is all.