A tool designed to assess the effectiveness of email marketing campaigns by quantifying the percentage of recipients who open a given email. This metric is calculated by dividing the number of emails opened by the total number of emails sent (excluding bounces) and then multiplying by 100 to express it as a percentage. For example, if 500 emails are sent and 100 are opened, the open rate is 20%.
This calculation provides crucial feedback on the subject line’s attractiveness, the sender’s reputation, and the relevance of the email content to the target audience. Tracking this metric allows marketers to understand trends in audience engagement, evaluate the impact of different email strategies over time, and benchmark performance against industry averages. Historically, monitoring this metric has been a fundamental practice in direct marketing, evolving from manual tallies to automated tracking within email marketing platforms.