True open rate calculator

A true open rate is the share of delivered emails that a person actually opened. It removes opens fired by Apple Mail Privacy Protection, which loads images for every email automatically, and by security scanners that check incoming mail before the recipient sees it.

In Meisa's study of 71,602 delivered SaaS emails, Apple's proxy alone accounted for 9.3 points of a 35.0% raw open rate. Together with security scanners, 57.6% of emails counted as opened were never opened by a person.

Most email tools show opens by client or device. Add up the opens from Apple Mail and Apple Mail Privacy Protection and divide by total opens. If your tool does not show it, start with the study default and adjust.

Pick Low if your list is mostly people on personal inboxes and the email is something they asked for, like a sign-in code. Pick Typical for a mixed SaaS list. Pick High if many recipients are on company email, where gateways scan every message.

Much less. In the study the raw click rate was 3.23% and the human click rate 3.13%, so clicks are a far more reliable engagement signal than opens.