1. Create a new charcter

2. Send that new character the items, gold you want him/her to send to someone annonymously

(if its just a text mail/letter then dont mind step 2)

3. Send the mail!

4. Log out and delete the character lol.

5. thus when the recipient gets the mail it will be 'from: unknown'…

If that doesn't work and you need gold quick, I recommend The MMORPG Exchange WoW Gold. They deliver quickly and are cheap! I usually receive my gold within 20 minutes. They're my secret weapon, I highly recommend them!