[can you semd a gift to a non-friend]

i have been trying to send someone i kno a gift but i cant find the transaction. Do u have to be friends to do this?

[missing gifts?]

I have spent over 1,000 lindens  on gifts  for a friend that have never been delivered!  Thats ridiculous!   It always says

got it, sending. But it never appears in his invwntory.  What cab I do?