A community social platform recovered millions of falsely-bounced notifications per quarter
Notification email was the user-engagement lifeline. Real-time re-verification on initial bounce recovered millions of false positives.
Persona: A global community-driven social platform
What was breaking
At scale, notification email volume meant even a small false-positive bounce rate translated to millions of missed messages — and millions of disengaged users. The team needed to distinguish true undeliverables from temporary or false bounces without manual review of every event.
How emailzeno fit the workflow
Notifications routed through the existing sender as before. On bounce, the address was re-checked via the emailzeno API in real time. Confirmed-deliverable addresses were retained and re-enabled for notification; confirmed-undeliverable addresses were suppressed. The bounce-event-to-suppression decision became data-driven, not heuristic.
What changed
Millions of false-bounce suppressions were prevented in the first quarter alone. User engagement recovered for cohorts that had been silently dropped from notifications. Suppression-list growth slowed to match true churn rather than overshooting it.
“A bounce is a hypothesis, not a verdict. Re-verification turned suppression from guesswork into evidence.”
The emailzeno building blocks
Real-time post-bounce check
On bounce event, call the API in-line with your existing webhook handler. The handler decides suppress vs retain based on verified status.
Volume-scale throughput
API supports the request rates required by social-platform notification fan-out. Burst-tolerant by design.
Confidence-scored verdicts
Each verdict carries a confidence indicator so your retention policy can vary by certainty level.
Questions teams ask before adopting
Run the same play.
First 300 verifications free. Burst-tolerant API for platforms.