Average revenue per email is a metric used to measure the average amount of revenue generated by each email sent by a company or individual. This calculation takes into account the total revenue earned from email marketing efforts and divides it by the number of emails sent. It is a key performance indicator that helps businesses understand the effectiveness of their email campaigns and the return on investment for each email sent. A high average revenue per email indicates a successful and profitable email marketing strategy, while a low average revenue per email may signal the need for improvements or adjustments to the campaign.