Hi, i received a blackmail mail the 26th july, with a bitcoin adress supposed to be the one of the blackmailer.
And yet, the blackmailer hasn't done anything to you, does he? Even after several weeks.
They do this just to terrorize you. Most of the receivers know how to handle such mail, but the blackmailer's target is that guy, out of 50 others, who'll fall for it. This person didn't type your email arbitrarily. Obviously, you've given it to someone who's
very likely to be selling email addresses.
Do not fall for it!
(Generally for blackmailing)