Marketing Services Lead Generation

I need a reliable partner to build a fresh list of qualified B2B prospects specifically within the Marketing Services sector in Australia. My sole objective is to generate new qualifies leads, so every contact you deliver must be decision-level personnel who can realistically consider agency partnerships, white-label arrangements, or outsourced campaign work.

Scope of work
• Research and identify companies that provide or purchase marketing services (digital, creative, performance, etc.) in the Australia. SMB will be the key focus area.
• Find accurate names, job titles, work email addresses, LinkedIn profile links, company URLs, and phone numbers which are qualified and interested in marketing services in Australia.

Deliverable
A cleaned CSV/Excel file containing at least 500 unique, vetted leads that meet the criteria above, ready for use.

Acceptance criteria
1. Minimum 95 % email validity (I will run a NeverBounce check).
2. Every contact belongs to a company that operates in, or purchases, marketing services.
3. No generic inboxes (info@, sales@) unless the company has fewer than 5 employees and no direct address is publicly available.

Tools such as LinkedIn Sales Navigator, Apollo, ZoomInfo, Hunter, NeverBounce, or similar are welcome—use whatever stack lets you hit the accuracy target quickly.

Please outline your approach, sample size you can provide for an initial quality check, and the turnaround time for the full list.