Email & Outreach

Bounce Rate (Email)

The percentage of emails that fail to deliver, either permanently (hard bounce, bad address) or temporarily (soft bounce), and a key signal of list quality.

Why it matters

A high bounce rate damages your sender reputation and signals a dirty list, so it is both a symptom and a cause of deliverability problems.

How it is calculated

Bounce rate = (bounced emails / emails sent) x 100.

What good looks like

Keep bounce rates low through list verification and hygiene; a rising bounce rate is an early warning to clean the list before reputation suffers.

Related terms

Email DeliverabilityList HygieneSender ReputationSpam Trap
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