500K US Executive Email Leads

I need a database of 500,000 verified email addresses for United States–based executives. Directors of Operation are the top priority, but Managing Partners, Group Controllers, senior finance leaders, National Sales Managers, and Heads of Finance & Controlling are also welcome in the mix as long as the total count hits the target.

Please pull the contacts from ZoomInfo, PitchBook, or an equivalent premium source and run them through a reliable verification tool so the bounce rate is negligible. Phone numbers are not required; clean, deliverable emails are all I need.

Deliverable
• One CSV or XLSX file containing at least 500,000 rows with these columns: First Name, Last Name, Title, Company, State, Verified Work Email, Source reference/date.

Acceptance criteria
• Minimum 500,000 unique records.
• 95 %+ email validity on a random NeverBounce spot-check.
• Delivered within 48 hours of project award.

If you already possess a list that meets these specs, let me know and include a small sample for validation. Speed matters, but data integrity comes first, so outline your sourcing and verification plan when you respond.