- I sent a letter to my friend but they haven't received it yet.
- My friend sent me items in the mail but they haven't arrived.
Mail delivery time varies depending on the origin and attachments of the message:
- Simple messages, returned mail, and mail from guildmates arrive immediately
- Mail from the same Blizzard account also arrives immediately regardless of attachments
- Mail from another Blizzard account takes one hour to arrive if an item or currency is attached
- Mail from the Auction House to the seller takes one hour if currency is attached