1. Segment of subscribers who open your newsletter more than 90% of the time.This is your core user base. These are your super fans. What these people care about matters. You are writing to them every time you send an email. pic.twitter.com/W9EpJMgflR— Daniel Berk 🐝 (@danielcberk) April 10, 2023 2. Segment of subscribers who open your newsletter less than 25% of the time.This group is a nice vanity metric, but they are window shoppers of your newsletter content. They are not super fans, and they are not your core audience... good to keep them, but not heavy hitters. pic.twitter.com/Ek5fJ696La— Daniel Berk 🐝 (@danielcberk) April 10, 2023 3. Segment of subscribers who haven't opened or clicked at all in the last 60 days.Delete these people from your subscriber list.(you can change the 60-day variable to be more aggressive at 45 days or less aggressive at 120 days).Either way it is helpful to remove them. pic.twitter.com/G0Z2j7lUuB— Daniel Berk 🐝 (@danielcberk) April 10, 2023