In plain English
This is a different measurement from website bounce rate, which describes visitors leaving without interacting. In email it means the message never arrived.
It matters because mailbox providers read it as a signal of list quality. A high bounce rate damages sender reputation, which affects delivery of everything you send afterwards.
What to know
Undelivered percentage
Of emails sent.
Two types
Hard and soft, with different causes.
Affects reputation
Providers treat it as a list quality signal.
Watch the threshold
Above roughly two percent is a problem worth acting on.
Why it matters
Bounces are the earliest visible symptom of a list quality problem. Left alone, they progress into deliverability failure that is much harder to reverse.
Common mistakes
×Confusing email bounce rate with website bounce rate.
×Ignoring bounces below an arbitrary threshold.
×Re-sending to hard-bounced addresses.
×Not removing bounced addresses automatically.
FAQs
What bounce rate is acceptable?
Under one to two percent. Higher suggests list quality problems.
Is this the same as website bounce rate?
No. Different measurement entirely.
WRITTEN BY TARIQ SALLAM
Marketing Consultant. Entrepreneur. Content Creator.
I'm a marketing consultant, entrepreneur and content creator. I help businesses grow through practical marketing, websites, SEO, content and AI.
More About Tariq →