Email List Debounce & Validation

I have between 1,000 and 50,000 email contacts that came from third-party lists, and I need every address confirmed as deliverable before I launch my next outreach sequence. The task is strictly verification and debounce—no enrichment or extra data gathering required.

Here’s what I expect:
• Use respected verification platforms such as NeverBounce, ZeroBounce, MillionVerifier, Hunter, or a comparable tool that can identify hard bounces, spam traps, role accounts, and inactive domains.
• Return a clean CSV/XLSX where each record is clearly marked Valid, Invalid, Catch-All, or Unknown, along with any confidence score your tool provides.
• Include a short summary report showing overall deliverability rates and the methods you used so I can document list quality for my ESP.

I’ll supply the raw list in CSV as soon as we start, and I’m happy to split the file into batches if that speeds processing. Quick turnaround and accuracy are more important to me than fancy formatting—just make sure the final list is ready to import without risking my sender reputation.