Glossary
Related glossary terms
An email bounce occurs when a message cannot be delivered to the recipient’s inbox and is returned (or “bounced back”) by the receiving mail server. Bounces are typically categorized as:
Soft bounces: Temporary delivery failures, often due to:
Hard bounces: Permanent delivery failures, such as:
High bounce rates are a signal to inbox providers that your list quality or sending practices may be poor, which can damage your sender reputation and reduce deliverability.
To reduce bounces, maintain a clean list, validate addresses at sign-up, and monitor bounce codes in your email logs.
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