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Email Bounces

Bounces are delivery-provider events recorded after SES rejects or later reports a message as undeliverable. In the dashboard, bounce information appears through the email lifecycle status, related logs, metrics, and suppression indicators.

Raw markdown

How to investigate a bounce

  1. Open Emails and filter to bounced messages or open the specific email ID.
  2. Review the recipient, sending domain, and event timeline.
  3. Open Logs for the API request and worker/provider follow-up records.
  4. Check the recipient suppression state. Hard bounces should prevent future sends to the same address.
  5. Review domain authentication in Domains if many unrelated recipients are bouncing.

Self-hosted caveat

Bounce status depends on SES/SNS events reaching the ingester. If API sends succeed but bounces never appear, check the ingester deployment and SNS subscription before changing application code.