Username (ingame): Nanda
Suggestion (short description): Mailbox
Why (explain what this will benefit, and how): Having a mailbox allows friends to send items/gifts to players while they are offline.
Details (a more thorough explanation of the above): The reason I believe this will make a great addition is not only for this above but also if there are any forum only events you could simply mail the recipient their reward. Allowing such a mail feature also allows for both parties to chat back and forth if unable to be on at the same time that often.