Targeted BTinternet Email Leads

I’m looking for a clean, up-to-date list of email addresses that end with
• btinternet.com
• talk21.com
• btopenzone.com

Tell me the exact count you already hold for each domain, along with an estimated bounce rate if you have it. The addresses will be used purely for data-entry purposes, so accuracy is more important than volume and no phone numbers or extra profile data are required.

Deliver the file in CSV or Excel, one address per row, duplicates removed and obvious role-based accounts (info@, admin@, etc.) filtered out where possible. I’ll validate a random sample before releasing the milestone. Let me know your turnaround time and the source or method you’ll use to ensure the list’s legitimacy.