How do I confirm gift book was sent?
How do I determine if gift books from the iBookstore were actually purchased? I went through the process, even selecting the type and color of gift notification, but recipients never received them.
The recipients have checked the spam folder as well as the inbox on the accounts that you sent them to ? If the gifting went through then you should be able to try resending them (and double-check the email addresses) : Resend iTunes Gifts - Apple Support