When More Email Delivers Less: How Tiered Sending Protects Engagement and Deliverability

There is a moment every marketing team eventually reaches. It is the moment when you realize that sending more email is actually delivering less. You see less engagement, less deliverability, and less trust from your audience. It feels counterintuitive, yet it is happening everywhere.

For years, the instinct was simple. If performance dipped, the solution was to widen the audience or increase frequency. Teams sent more reminders, more promotions, and more nurture touches. Over time, the results began to tell a different story. Inboxes became crowded, audiences grew tired, and the metrics that once felt predictable started moving in the wrong direction.