Hello guys! I received an email letter from cryptsysettlement. But honestly, noticed it just now. They ask me to send them "W-8 form". But i can't figure out should i send it via
email or i have to send it by
post mail?

I would be grateful if someone explain it to me. Sorry for this noob question!
Send it via certified mail with a return receipt.
Ok, got it. Thanks for your help! How do you think, it's not a bad decision if i will send it by email, too?
Why are you still trusting in this exchangers that nobody knows a sh1t about them? i dont understand it, there are better options to put your money insted of this one. I used cryptsy a long time ago for making a trade, and it was an awful experience, it was so buggy and it took me more than 2 hours to exchange only one coin.. Anyway, good luck with all of those who are still trying to withdraw their money.
Cryptsy scammed long time ago. We're trying to get something through the courts. Lost here more than 30 eth.