Agency Client Onboarding in 2026: What Works, What Doesn't, and What to Actually Buy (Honest) Most agencies fix their onboarding problem the same way: they panic after losing a client in month two, spend a weekend building a Notion template, use it twice, then forget it exists. Six months later, they lose another client. Repeat. Onboarding problems rarely get solved by motivation bursts. They get solved by systems that run even when you're slammed with deliverables and don't have time to think about process improvements. This is a practical guide to what's actually out there, what works for different agency sizes, and how to figure out what you should actually spend money—or time—on. The Three Types of Solutions Everything in the market falls into roughly three buckets. Type A: Free Templates and Checklists This is where most agencies start. A Google Doc, a Notion page someone shared on Twitter, maybe a Trello board with columns like "Kickoff" and "Assets Received." What's good: Zero cost.…