Twitemail is a free service to share email on Twitter. It converts email to web page, and then shares link to that on Twitter. Then anyone can see that email.
Twitemail is quite easy to use. To start, you go to Twiteamail.com, and sign in with your Twitter id using oAuth authentication (you don’t need to pass your Twitter username and password). After that, Twitemail will give you a unique email address.
To share any email with your followers, just forward that email to that email address. Twitemail will convert that email to a webpage, and will publicly post that.
It will then send a tweet to your followers with a link to that web page. The subject of your email will become the message in your tweet.
If you want to share any email on Twitter, Twitemail is really the best service to use. Be aware that any email that you share with Twitemail will be publicly visible.