How do seed list results differ from real audience placement?

Seed results and real audience placement often diverge:

Seeds lack history: Fresh test accounts have no engagement record with your domain. Real subscribers have months or years of interaction patterns.

Engagement variation: Your real list contains engaged openers and ignored addresses. Seeds cannot represent this spectrum.

User-level models: Providers build individual prediction models. Seeds do not have these profiles established.

Seeds tell you if you pass baseline filtering. Real placement depends on each recipient's unique relationship with your sending.

Test voyages show if the route is navigable. Actual cargo delivery depends on your reputation at each individual port.