My email was hitted by some mail, that named is myetherwallet with title "ETH HARDFORK" and when i click the button on the message its redirected to some phising/scam like myetherwallet site's.
The question, where they(the scammers) know my email? because i never linked my myetherwallet account to my email account.
No,it doesnt work that way.Your email might have been exposed where you might able to register or input it into other services/websites.
When theres a leakage or those email list had been solved out and been bought then scammers or hackers do mass sending with those phishing emails
just hoping for someone to be hooked up.