I assume there's some sort of etiquette

On the day we got the keys from our seller she asked if we wouldn't mind holding her mail, that the neighbor would stop by and pick it up. Of course we said, yes, no problem, not a big deal! And the neighbor did stop by one, twice and then... nothing. So, uh, is it cool to toss this now?

I mean, that's a lot of JC Penny catalogs!