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⚠️ High Priority

Postmark High Bounce Rate: Clean Your List

Your Postmark bounce rate is above 3%

Fix within 48 hours.

Check Postmark bounce metrics:

1

In Postmark, review Activity feed

2

Check bounce statistics

3

Identify invalid addresses

What Could Be Causing This?

Postmark List Quality Issue

Most Common
InboxEagle Detects This ✓

Invalid addresses cause bounces.

How to confirm:

Check bounce stats in Postmark.

Fix Playbook

Step 1: Remove Invalid Addresses

HoursImpact: High
  1. Remove bounced addresses from suppression list
  2. Validate list before sending

Postmark-Specific Note:

Postmark auto-tracks bounces in activity feed.

Prevention Checklist

  • Validate emails before importing

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Frequently Asked Questions

How does Postmark handle bounces?
Postmark automatically suppresses hard bounced addresses.
Free Checklist

The exact checklist used by 2,000+ email senders to diagnose and fix inbox placement issues — free.

  • Authentication setup (SPF, DKIM, DMARC)
  • Sender reputation signals to monitor
  • List hygiene benchmarks
  • Content & engagement red flags

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