Petsburg Post Office: This is where Residents can go to pick up and send their e-mail. One of the benefits of being a Resident of Petsburg is a fully functional e-mail system. Our Residents can use it for communication within Petsburg alone, or as their general e-mail address. Wouldn't you rather have a unique @petsburg.com address than a common everyday mail address like @hotmail, @yahoo or @aol?