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Dev.to
Dev.to
6/16/2026
Observability for Email Agents

Observability for Email Agents

Short summary

Email agents built on Nylas get built-in observability for free: message.created webhooks fire on inbound mail (input), send_success/send_failed/bounce_detected webhooks report delivery outcomes (output), and mailbox folders plus rule evaluations form an audit trail. Compose these primitives to diagnose production issues—what came in, what the agent tried, where it failed.

  • Email agents gain native input/output telemetry via message.created and delivery webhooks without extra instrumentation
  • Mailbox folders act as observable state machine; rule evaluations provide governance audit trail
  • Diagnose agent failures by composing event stream, governance logs, and folder inspection—no log aggregators needed

Generated with AI, which can make mistakes.

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