> "there aren't a thousand mail clients like there are Twitter clients." Of course there are thousands of email clients! And sure, SMTP isn't as simple as a RE

> "there aren't a thousand mail clients like there are Twitter clients." Of course there are thousands of email clients! And sure, SMTP isn't as simple as a RESTful API, but it's been a standard since 1982! Backwards compatibility is a huge win for email. If you don't want to deal with "broken" protocols, there are services like Mailgun and Sendgrid that wrap it up in pretty API calls.