Bounce Rate Policy

High bounce rates damage sender reputation and can trigger sending limits or blocks. Treat bounces as a data-quality signal.

Actions​

• Stop sending to hard-bounced recipients.
• Investigate sudden bounce spikes by source, campaign, domain, and integration.
• Validate addresses before high-volume imports.
• Keep suppression handling active.
• Monitor bounce rates by mailbox provider.

If a bounce spike follows a new import, pause that source until the data is cleaned.