The email unsubscribe churn for eCommerce businesses is 338 per 100,000 users. (Netcore Cloud)
What does this mean? It means .338 of the subscribers on a healthy list will unsubscribe. It means Retention.
A well cared for list, one where you respect your subscriber, is VERY healthy. Prospects, customers, subscribers are retained over time. They want to be there.
All of us have Unsubscribe buttons, links and/or directions in every email we send. Still only 1 in 300 subscribers statistacally unsubscribes.
That is my experience NOW. I have been growing my list for 10 years and it is only getting better.
When I first started I had much higher "churn". Through testing and observation I found out on which of my emails people were leaving. First thing I did was delete that email. Second thing I did was never write an email like that to my subscribers again.