Maybe I don't understand it, but what should really happen with not sold items at the Exchange?

The email always tells me that the item gets back to my inventory, but I never received any.

you have to go to a mail console and pick them up there.

Hi,

been there, done that.

didn't work.

Think I have to write some more bug reports.. gg

Did you actually click the "take items" button while at the mail console?

also, if you have more than one toon, and a item was in the exchange on one of thoes toons the item is returned to that toon's mail, so you would need to log in to that toon, go to a mailbox, take item, resell

Note that you need to actually go to the mail console, interact with it, select "Send & Receive Mail", and then click the "Take Item" button on each and every mail.

NEVER use the Mail icon on your UI.

Also, if you deleted the mail before collecting the item, it is gone forever.