Guest posting clients fall into three buckets: agencies reselling link building, mid-market companies doing SEO in-house, and startups in competitive verticals. Agencies are your best volume play because they need ongoing fulfillment and care more about delivery speed than hand-holding. Start with LinkedIn outreach to digital marketing agencies with 5-20 employees. Search "SEO agency [city]" or "digital marketing director" and send a direct pitch showing you can place posts in relevant niches with actual DR ranges and turnaround times. Agencies buy when you solve their capacity problem, not when you explain what guest posting is. Companies in SaaS, fintech, legal, and health tech hire directly because they have budget and competitive search landscapes. Look for businesses ranking on page two for commercial terms, they know they need links but often lack the vendor relationships to execute. A cold email showing you can place content in their specific vertical, with real site examples, converts better than generic proposals. Upwork and Contra work if you price correctly. Quote per placement with tier pricing (DR 30-40, DR 40-60, DR 60+) rather than hourly. Clients hiring there want predictable costs. We've seen freelancers build retainer books starting at $2,000-4,000 CAD monthly by landing two or three anchor clients on these platforms then expanding through referrals. Your own case studies matter more than credentials. If you've placed guest posts that rank or drive referral traffic, document it with screenshots and URLs. One legitimate before-and-after showing keyword movement is worth twenty testimonials. Avoid clients asking for guaranteed DA70+ placements at $50 per post. That's either ignorance or they want PBN garbage with real site names. Qualified clients understand you're paying writers, doing outreach, and negotiating, so they expect $300-800 per placement depending on site quality. Position yourself there and you'll attract businesses serious about links, not tire-kickers hunting for shortcuts.