Buy Fortnite Account at MMOGA?

What does this "Without Mail" mean? I know what it means in translation, but I don't exactly understand whether that plays a role in the purchase.

Selling username and password only

An email is required for each account, with the accounts you then have no access to the email account, so the former owner could theoretically get the account back.

It is forbidden to buy Accs just leave it or you will likely get banned and spend money otherwise