Word of Caution:
I did the same thing as the OP, I added my email address and it imported 800 emails as tickets. I went ahead and deleted them, and that action also deleted them from my Inbox.
Yes, maybe I should have read the manual first, shame on me, but having this action taken on my email account caused a big disruption for me, and I would suggest that the this action should be changed if possible.
Maybe a brief description of what this field does would help - "Sending email to this account will cause Help Desk tickets to be created."
UPDATE: After restoring the deleted messages, I noticed 2 new email folders: "Helpdesk_archive" and Helpdesk_ignore". Both folders contained the "deleted" emails. They had just been moved to these folders. I wish I noticed those folders hours ago.