Mail carrier
Mail carriers are a type of NPC appearing in The Sims, The Sims 2 and The Sims 3.
In The Sims, and on college lots in The Sims 2: University, they deliver bills every three days. In The Sims 3, and on non-college lots in The Sims 2, they deliver bills on Tuesday and Thursday. They also come by to collect paid bills from the mailbox.
In The Sims 2 and The Sims 3, they may also deliver items such as love/hate letters, books and mounted fish. Sims can talk to them, ask them to hang out, and give the a monetary tip.