Thanks for sharing. Instead of adopting chat, we can change the way we use email. Not by putting up another email app but by changing the way we use email itself from a conscious level. Email is good for certain tasks but it’s not the way to do all communications. Systems that go along the same line with http://five.sentenc.es could help a lot. Knowing email is best for plain text message, realising when to call on the phone or meet face to face are also ways to improve email communication as a whole.