Can I post the email correspondence between a company and me without any legal consequences?

A company has frozen an account of mine citing suspicious activity (more specifically, that I downloaded a copyrighted file). I’ve been talking to the company on email. Am I legally allowed to post the email correspondence on say, my blog? They are not suing me, but they have drafted a legal letter for me to sign (I have no idea what’s on it yet). I’m just really mad at being treated so badly and I want to blog about what happened…I’ve seen sites like Verizon Math, for example, and would probably do something like that (though maybe not as funny).

I know that I should probably consult a lawyer, but I don’t think it’s come to that point yet and would love to save the hassle and $$$.