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3 articles tagged with bounce rate.
Deliverability rate is inbox placements divided by emails sent - not the delivered percentage your dashboard shows. This guide gives you both formulas, a worked example showing the gap between them, target thresholds for every related metric, three ways to estimate inbox placement, and a fix list in priority order.
A hard bounce is a permanent 5xx failure — remove the address immediately. A soft bounce is a temporary 4xx failure that gets retried. This guide covers the SMTP codes behind each, healthy bounce rate benchmarks, the suppression thresholds that protect your sender reputation, and how to read a bounce log to diagnose the real problem.
Email bounce rate explained: the formula, the difference between hard and soft bounces, what SMTP codes like 450 and 550 actually mean, what counts as a good bounce rate, and nine concrete ways to lower yours before it damages inbox placement.
