A mail box might fix your problem.

I had a similar problem back when working in Morgan City, living in Amelia. I left before the post office opened, got home after it closed. They locked the doors because vagrants would sleep inside otherwise, which wouldn’t have been so bad had they gone outside to relieve themselves. Anyway, I bought a mail box so I could get my mail when I returned home. I brought it back with me when returning home, still use it.

Of course, you might have other postal needs but the mail carrier can meet most of them if you can catch him or her or leave a note making a request.

Just a thought

David trying to be helpful
(as always–trying)