The answer
com.inboxpolicy/send-decision
Top verified match: it matches your intent, it is the official vendor server.
fresh · published 60d ago · verified 2026-08-08tested · static-verifiedsigned passport ✓score 47/100
Runners-up
- OData Service for namespace microsoft.graph42/100 · weaker match
- Ruralicos API43/100 · weaker match