How GTM Inboxes uses this term
GTM exposes a heuristic content inspection that returns advisory risk codes for a draft, designed as a proactive complement to seed-placement evidence rather than a replacement for it.
Advisory by design
Content heuristics estimate risk from known patterns. They cannot see receiver-side models, so results are advisory input for editing, not launch approval. Seed placement remains the evidence gate for prospect traffic.
Where it fits in launch order
Run content checks while infrastructure readiness is being established, fix flagged copy, then validate the combined result with seed placement before the launch gate decision.