Email verification and prioritization

I need a freelancer to validate and prioritize emails for 500 contacts. Each contact has multiple email addresses, and we need to determine the most relevant one for an outreach campaign.

Key tasks include:
- Analyzing the contact list
- Cross-checking email addresses using:
- Public records
- LinkedIn for employment records
- Company websites
- Validating email status

Prioritization criteria:
- Based on current employment relevancy
- Categorizing addresses by response likelihood

Ideal skills and experience:
- Attention to detail
- Experience with email research
- Proficiency in using LinkedIn and public records

Deliverables:
- A validated, priority-ranked email list
- One highlighted primary email per contact

Looking for thoroughness and efficiency to ensure an optimized outreach list.