Facebook Ads: Cost-Effective Message Generation

My primary goal is to stimulate customer inquiries through Facebook ads, with a strict cost constraint of $0.20 per message.

Key objectives:
- Generate customer inquiries through Facebook ads
- Maintain cost per message under $0.20

Target Audience:
- Ads will be aimed at international customers

Ideal Skills and Experience:
- Proven track record in managing Facebook ads
- Experience with cost-per-message campaigns
- Understanding of international market dynamics
- Strong skills in targeting and audience segmentation

Please provide examples of similar campaigns you've managed and their results in your proposal.