To be fair.. if they\'re inside your country, and they\'re blackmailing you with personal information.. that\'s something you should get the police involved with. Even if there is no specific internet law that they\'ve violated with the privacy invasion, once they took it beyond that to blackmail... well... that\'s a crime everywhere. The only problem is if your "personal" emails actually contain something illegal, and not just personal/embarassing.
For the future, don\'t use the same password in any two places. Don\'t use free email accounts for personal stuff.