I know that feeling Limes!
I can't count the number of times it's happened to me.
I think everything turned up eventually (the longest wait was actually my fault - it was sent overland because I messed up on the postage).
Does your recipient check their postbox often?
Not every Dwellar gets post through their door.
Oh - I sent some money to Jim (for UT's car) and as far as I know it NEVER arrived.
That was an obvious case of theft, either here or there