I discovered that if you hit ctrl+shift+c then after typing testingcheats true in the cheat console window you can then hold down the shift key while you click on the mailbox - two cheats will pop up. The first is just Reset Object (Debug) while the other one is Alter Needs... clicking on Alter Needs 6 more options appear which are all self-explanatory:
1. Disable household needs decay
2. Disable world needs decay
3. Enable household needs decay
4. Enable world needs decay
5. Fill needs (household)
6. Fill needs (world)

waow dude , you are soooooooo fast

Awesome, these should come in handy.

Buffy! YOu posted Buffy! I miss Buffy!


D'oh - that was so off topic!

Not really, I needed to edit a sim in CAS and I just thought I'd start shift-clicking on everything to see what would come up...and since the mailbox was always important in other games, that was my first choice and the only useful cheat I found...