On the subject of in game mail remember to ALWAYS put the @ symbol in front of your recipients address or you will lose your items forever.
The system will not stop you with any error message should you forget and won’t matter if the address is correct.
Without the @ symbol in front of the recipients address your attached items will gone forever.
The system will auto format your message address but ONLY if you click the text area. However if you are in a hurry and forget to click the of the text area or did not manually enter the @ symbol in front of the address you can kiss your items good bye no matter how precise the you typed the recipients address
The mail system does not allow the items to revert to the sender in this case. A ticket to Cryptic will avail you nothing as I believe they have bigger fish to fry. Fair enough.
3 weeks and 2 tickets later and not a peep..Fair enough.
actually i am sure it says in the tooltip that if you mis-address a mail it may take some time to return to sender (which implies that they do get returned or at least that was the intention but could be another broken feature) unless the address you did use actually exists but isn't the person you intended