Open Rate

Open rate is the percentage of recipients who opened an email campaign, calculated as (Unique Opens ÷ Emails Delivered) × 100. It’s influenced by subject line, sender name, and timing. Note: opens are tracked via invisible pixels, so they’re unreliable on text-only or privacy-focused clients. While still used, open rate is declining in importance due to Apple Mail Privacy Protection (MPP). Focus more on click and conversion metrics.