Have you cleaned your email list?
If you’re not regularly cleaning bad email addresses out of your email list, you’re really hurting your email effectiveness:
- Large numbers of bouncing emails trigger spam filters at ISPs. Much less of your good email gets through.
- Your data is way off. Your open and click rates are skewed by all the people who never get or open your email. You have no idea what works.
Once a quarter (at least), you should purge your email list of all bouncing addresses. You should also delete all subscribers who haven’t opened a message in a year. Accept the fact that they aren’t going to suddenly start responding. They’re probably auto-filtering you right into the junk folder.