How do I know I have received a Sweetheart Gram from another user?

You will receive an event notification along with a Neomail, letting you know that you have received a Sweetheart Gram from another user. You will need to either accept or deny within 48 hours of receiving the Sweetheart Gram. If accepted, the gram will go into your inventory. If denied, the gram along with the item that was chosen will go back to the sending user.