Regardless of what the scammer claims this fee is for (such as courier charges, bank charges, or various imaginary certificates), these are all fabricated by the scammer to obtain money from victims. Scam lottery emails will nearly always come from free email accounts such as Outlook, Yahoo!, Hotmail, Live, MSN, Gmail etc. Scam emails will often insist that the recipient keep their win confidential; this is done to avoid others advising them that the email is a scam.