How to keep a job you don't appreciate
To address polarizing issues, let's keep it complicated

Email loyalty

When designing emails, most companies don't give much thought to customer loyalty issues. Getting people to open and click dominate the process. However, there are a few simple procedures that prevent unsubscribes and signal our audience that we are willing to earn their attention and loyalty. 

  • Use a calendar to establish an emailing plan that customers can learn to expect
  • Segment customers by behavior, starting with the most loyal VIP types
  • Study unsubscribers and develop a heartfelt re-engagement campaign--but do let people unsubscribe quickly.

SendGrid Blog: What is Retention Marketing? And How to Use it in Your Email Program, 2018-Jul-13 by Kelsey Bernius

You don’t have to dive head first and try out every last retention email campaign tactic. In fact, it’s better to start out and test one strategy at a time so you can measure your results before implementing more permanent programs.