Will inboxes stop using open rates?

Mailbox providers have never directly used open rates in filtering decisions. They see engagement signals before you do: whether recipients interact, how quickly, whether they delete without reading, mark as spam, or move to folders. Your open tracking is separate from their visibility.

Privacy changes affect marketer visibility, not provider visibility. Apple's **MPP** blocks your tracking pixel but Apple still knows what their users do. **Gmail** doesn't need your pixel to see whether recipients engage with messages in **Gmail**.

What continues mattering: provider-side engagement signals that they've always tracked. Opens (as marketers measure them) were always imperfect proxies for actual engagement. Focus on actions you can measure that also indicate real value: clicks, replies, conversions, and complaint rates.