Measuring Email Performance

You cannot improve what you do not measure. Email metrics tell you whether subscribers open, engage, and convert, and where flows leak value.

Vanity numbers like list size mean little. Focus on metrics tied to behavior and revenue to guide real decisions.

Open rate is the share of delivered emails that were opened. It signals subject-line strength and sender reputation.

Note that privacy features can inflate opens, so treat it as a directional signal rather than absolute truth.