First: this is your first post away from the Altcoin boards, and you're already posting it on the wrong board. Please move (bottom-left) it to the right board.
Learn from this guy:
the email was something like heeeey i have your nude pics how you jerk off or something like this
Then stop jerking off in front of a camera! Or make a living out of it, take your pick Learn from this guy:
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what are the chances to mass spam somebody who has BTC and is stupid enough to fall for this jeses
As with all spam: it's very cheap to send, and it only needs a very low response rate to turn a profit.