Custom Bounce Guard
Detects repeated qualifying permanent nonexistent-recipient delivery failures and temporarily suppresses subsequent attempts to those recipient addresses. This helps reduce recurring failed sends and avoidable outbound traffic.
- ✓ Configurable thresholds and suppression periods
- ✓ Applies to configured authenticated outbound routes, including Webmail
- ✓ Administrator-controlled activation and deactivation
Suppression is recipient-wide while active; legitimate recipients may need administrator review. This is not a spam filter or a deliverability guarantee.

