Email Verification Checklist

Email Verification Checklist

Sending to unverified email addresses destroys your sender reputation and tanks deliverability for future campaigns. Run through this checklist before launching any outbound sequence.

Pre-Campaign Verification

• Run all email addresses through a verification service
• Remove all hard bounces and invalid addresses
• Flag catch-all domains for manual review
• Remove role-based addresses (info@, sales@, support@)
• Check for disposable or temporary email domains
• Verify domain MX records are active
• Remove duplicate email addresses from the list

Domain Health Check

• Confirm your sending domain has SPF records configured
• Verify DKIM signing is active and passing
• Check DMARC policy is set to at least p=none
• Review your domain’s blacklist status across major databases
• Confirm your IP address is not on any spam blacklists
• Test inbox placement across Gmail, Outlook, and Yahoo

List Quality Standards

Before any list enters your email system, it must meet these thresholds:

Metric	Minimum Standard
Valid rate	>95%
Catch-all rate	<15%
Bounce rate (predicted)	<3%
Disposable emails	0%
Role-based addresses	<2%

Ongoing Monitoring

• Re-verify lists that are older than 30 days
• Monitor bounce rates after every send (pause if >3%)
• Track spam complaint rates (pause if >0.1%)
• Remove bounced addresses within 24 hours of detection
• Set up automated verification for new list imports
• Review sender score monthly

Emergency Actions

If your bounce rate exceeds 5% on any send:

1. Immediately pause all outbound sequences
2. Quarantine the list and re-verify all addresses
3. Check domain reputation on Google Postmaster Tools
4. Reduce daily send volume by 50% for 7 days
5. Gradually ramp back up once bounce rates normalize

Scrapine verifies every email address at the point of discovery, so leads entering your pipeline are already validated. Continuous re-verification catches addresses that go stale over time.