Email marketing campaigns are a delicate balance of different factors interacting in just the right way to create what is an overall smooth flowing campaign. Because of this, numerous little factors, some of which can even be hard to identify, will influence if your campaign runs smoothly or suddenly fails in some way that causes drops in beneficial metrics.

In order to minimize this risk, you need a hit list of the most problematic elements that are likely to screw your campaign up, so you can get rid of them in advance.

Luckily, this post is dedicated to giving you a quick and easy to follow “public enemies” list of the worst and most common offenders you’re likely to meet, described as actual characters.…