http://shortmail.com
Shortmail is totally new – redesigned from the ground up – and gives you an email identity where relationships are magically better. In a sense, it’s a peaceful garden where relationships can flourish amid the mean streets of the Internet.
As the name implies, Shortmail is email – only shorter. We’ve applied the idea of length-limitation to email. All Shortmail messages must be less than 500 characters. We know that people are becoming more accustomed to length-limited communications: Twitter and SMS messaging demonstrate that.