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Metrics

Open Rate

The percentage of delivered emails that recipients open at least once.

Open rate is calculated by dividing the number of unique opens by the number of delivered emails, then multiplying by one hundred. It is a top-of-funnel metric that helps gauge subject line strength, sender name recognition, and initial timing. Open rate tracking relies on a tiny invisible pixel, so it becomes less reliable as privacy features and image-blocking become more common.
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