Email is a horrible solution for notifications, and I'm surprised people would defend it. 1) Oops, that important message got sent to your Spam folder. 2) Thi

Email is a horrible solution for notifications, and I'm surprised people would defend it. 1) Oops, that important message got sent to your Spam folder. 2) This is a two-way medium, but "Please don't reply to this email." 3) "Now that we have your email address, we can send all sorts of promotional messages. Yay!" 4) Phishing.