ROI (Return on Investment)
A measure of profitability from email campaigns.
ROI is a key metric in email marketing that evaluates the profitability of a campaign by comparing the revenue generated to the cost of running the campaign. For example, if an email generates $1,000 in sales and costs $100 to create and send, the ROI is 900%. High ROI indicates effective targeting, content, and offers. Monitoring ROI ensures that marketing efforts contribute positively to the bottom line.