You really don't want to do that. You'd be flooded by thousands of spam messages a day if your email address was public. You don't see most of the spam sent to you because the bulk of it gets blocked at a higher level before it reaches your inbox/spam folder, and that can't be turned off for you without turning it off for everyone using your mail host. Yeah spam filtering does provide a vector for censorship but it's also the duct tape and bubblegum holding the whole thing together. Better to just not use email for anything you might worry about being censored and leave it for bills and whatnot.