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⚠️ Critical Issue

Mailgun High Spam Complaint Rate: Recover Reputation

Your Mailgun spam complaint rate is above 0.3%

Fix within 24 hours.

Check Mailgun complaint metrics:

1

Review Mailgun Logs for complaint events

2

Check email content

3

Identify triggers

What Could Be Causing This?

Content Triggers Complaints

Most Common

Misleading or aggressive content causes complaints.

How to confirm:

Check Mailgun Logs for complaint patterns.

Fix Playbook

Step 1: Fix Email Content & Remove Triggers

HoursImpact: High
  1. Review complained-about emails
  2. Remove misleading language
  3. Add clear unsubscribe link

Mailgun-Specific Note:

Mailgun Logs provide detailed complaint information.

Prevention Checklist

  • Monitor complaint patterns

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Frequently Asked Questions

How do I see complaints in Mailgun?
Check Mailgun Logs for events with type=complained.
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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