Shortmail is a new kind of messaging that combines the best parts of email, text messaging, and Twitter.
Shortmail lets you communicate with anyone who has an email address — one-to-one or as a group. Messages are limited to 500 characters, which keeps them concise and conversational.
Shortmail supports push notifications, to keep you on top of important messages. And you can also have "public" and "open" conversations, to share your discussions with the world!