The ghostwriter's checklist

1. Test the voice on the hardest client. Feed each candidate tool your most distinctive client's account and judge whether the output survives the read-aloud test against real posts that perform in their niche; then check what defends it at scale (a research-backed humanizer beats hoping).

2. Run the mention test from the client's profile. Tags toward the client's customers, not your agency page's followers; most schedulers fail this by their own documentation, and dead tags quietly burn the client's relationships.

3. Make validation client-proof. The approval step must be easier than email for a busy executive: no login, one click. Demo the client's side, not yours.

4. Price the roster at next year's size. Per-client linear (MagicPost from €49 with discounts), per-profile meters ($14.95 AuthoredUp), tier cliffs and slot models all cross at different roster sizes; the agency pricing table does the math across ten tools.

5. Report context. "Beat the market median" renews retainers; raw impression counters invite the client to wonder what they pay you for. Benchmarked, white-label, exportable.

6. Upsell the next line when the writing works. Posts that perform create two natural add-ons: engagement management and content-driven lead gen. If your stack already delivers both per client, the upsell is a settings change, not a new vendor (MagicPost's engagement workflows and lead detection do, on the official API).

Ghostwriting LinkedIn for clients? See how agencies and ghostwriters use MagicPost: style import per client, validation without client logins, working mentions and benchmarked white-label reports, from €49 per client per month with volume discounts (as of June 2026), no card to start. Or run a whole client roster from one place.