Contact Verification Checklist

Email Verification

• Run all email addresses through an email verification tool (ZeroBounce, NeverBounce, or similar)
• Remove or flag addresses marked as invalid or undeliverable
• Flag catch-all domains for manual review
• Check for disposable or temporary email domains and exclude them
• Verify that email format matches the company’s known pattern (first.last, firstinitial.last, etc.)
• Confirm no emails belong to shared inboxes (info@, sales@, support@) unless intentional

Phone Number Verification

• Validate phone number format (correct country code, digit count)
• Distinguish between direct dial, mobile, and main office numbers
• Flag numbers identified as disconnected or reassigned
• Remove fax numbers incorrectly stored as phone numbers
• Confirm area codes match the contact’s listed location

Identity and Role Verification

• Cross-reference job title against LinkedIn profile
• Confirm the contact still works at the listed company
• Check that seniority level matches your target persona
• Verify department alignment (Marketing, Sales, Operations, etc.)
• Flag contacts who have changed companies in the past 90 days

Company Data Verification

• Confirm company name matches the legal or commonly used brand name
• Validate company domain matches the email domain
• Check that employee count and revenue range are current
• Verify industry classification is accurate
• Confirm HQ location and any relevant regional offices

Pre-Sequence Final Check

• Remove duplicates from the verified list
• Check against your suppression list (existing customers, competitors, do-not-contact)
• Ensure all required CRM fields are populated
• Assign lead source and campaign attribution tags
• Confirm compliance with email regulations (GDPR consent, CAN-SPAM requirements)
• Load the verified list into your sequencing tool and spot-check 5-10 records manually