Is the statement "May you be at party's party to night" well done? I not sure if I have to use be or are after pronoun you. Please help me!

How can I say a better word than slave? I'm afrolatin man and in my family don't want to use the Word "slave" for refer to our ancestors. We prefer use another the Word . This is because we understand that our ancestors didn't born "slave" all of them were free before the slavery, therefore, I want to know a Word that get this idea without lost the memory of this horrible holocaust. Thanks

I don't know how can finish an email Hey, Folks! I'm a newer writing English and I don't know how can finish an email. I saw some people to write "Regards". Please help me whit this problem and something else bad grammar here in this messenge. Thanks!