Open Rate is the percentage of delivered emails that are recorded as opened, with limitations due to privacy changes. A common calculation is: Recorded opens ÷ delivered emails.
In practical email marketing work, the important question is not just what Open Rate means, but how it should influence decisions. It matters because email is one of the few channels a business can own directly. Strong email fundamentals improve trust, deliverability, segmentation, and long-term lead nurturing.
A strong approach should connect Open Rate to measurable outcomes such as qualified traffic, calls, form submissions, booked appointments, ecommerce revenue, or lower acquisition costs.
Example
Example: If 5,000 emails are delivered and 1,750 are recorded as opened, the open rate is 35%. Because privacy features can inflate or obscure opens, marketers should also review clicks and conversions.