With an attitude like that nobody is going to help you.
I told you the most common problem I experience with customers based on my years of experience using DirectAdmin.
You expect people to help you without giving us any information. You left out valuable information.
So the mail was in the mailbox as I said. Otherwise the above command would not be able to recover all the emails. There would be nothing to recover if the mail was not in a mail box somewhere.
Somebody who does know something is simply ignorant. That is not a bad thing. We are all ignorant about many things. A stupid person refuses to listen to the answer.