Information on how long it may take for different kinds of mail to be delivered.

Items or gold left in the mailbox for too long is deleted

How to resolve an Internal Mail Error when looting mail.

How and when BoA or Heirloom items be sent to another character on the Blizzard Account.

More information on returned mail

Troubleshooting steps for missing Auction House mail reports

Mail can prevent a character from being deleted.

Troubleshooting World of Warcraft in-game mail issues.

Troubleshooting World of Warcraft in-game mail issues.

Troubleshooting mail sent without adding a CoD.