How 304 email marketers split test their subject lines (spoiler alert: it's usually badly)

by Parry Malm
The vast majority of email marketers are methamphetamine addicts. And not the cool kind like you find in the finest trailer parks of middle America. This survey of 304 email marketers will show you why. A couple of months ago, I wrote a blog post about how I believed email marketers don’t split test their subject lines very effectively.Read the full article