How do you get a password back in Maplestory even if your email account has been deleted

The only was is filling in this information with logging a ticket:

Full Name:
Birthday:
Secret Question "What is the name of your best friend?":
Secret Question two and answer:
Forum handle (If applicable):
Character Names:
Email registered to the account:

If you don't have the answers, have lesser chance of getting your password back.