Open Rate
The share of recipients whose mail client loaded your email's tracking pixel. Privacy features now inflate it — Apple Mail 'opens' messages nobody read.
Free · no signup · last reviewed August 29, 2026
The definition
The share of recipients whose mail client loaded your email's tracking pixel. Privacy features now inflate it — Apple Mail 'opens' messages nobody read.
Why it matters to an owner
Treat opens as directional at best. Replies and clicks are the numbers that can't lie to you.
This is the work. Want it done?
Everything here is free to use yourself — that’s the point. If you’d rather a senior marketer just handle it, in your accounts and your name: 20-minute call, no pitch deck.