It's a sad reflection of a lack of attention to the final click, but one in two click throughs will take shoppers to generic pages searching for the offer they thought they had already selected.

Just one in five are making it easy for customers to unsubscribe. So lists may stay long, but is that a good thing when being ignored and deleted hits deliverability?

If you don't have anniversaries to target individuals around or a timely upgrade or restocking offer, you're missing out on the biggest revenue earner for email marketers.