I have used this system to get people to write me (and not a simple email address) because
I was tired of all the spam I received at the Hotmail address I used before (with the chance to miss the messages really addressed to me).
Your Email, quite obviously, is your email address I will use to answer, in case you need a reply.
Message is what you want to tell me. It's 1000 characters long so, if you want to send me a poem, just post another message straight away or ask me to write you back so that you can use my email address.
I guess that's all. Thanks for writing.