API key authentication
SendGuard API calls use bearer API keys. Teams should create separate keys for environments and rotate keys when access changes.
Security and trust signals for AI outbound teams.
1Lookup exposes a dedicated security page and trust links. SendGuard now has a clear indexable page explaining how the product should be operated safely.
Pre-send data minimization
Send only the recipient, sender, message, and context fields needed for validation and policy decisions.
Decision audit trail
Preflight responses include decisions, risk scores, reason codes, approval metadata, and billing information for review.
Policy-first operation
Sensitive contexts can require approval or blocking before an AI agent sends email from a domain you need to protect.
Operational guidance
Treat SendGuard as part of the outbound control plane. Keep API keys server-side, pass only the context your policy requires, log decisions in your own system, and review approval queues for high-risk categories.