Guide

Build an Incident-Response Email Agent

An AI agent ingests alert emails, classifies severity, acknowledges each, escalates the urgent ones to on-call, and keeps a clean timeline of every incident.

Written by Caleb Geene Director, Site Reliability Engineering

Verified — CLI 3.1.20 · Nylas managed · last tested June 14, 2026

What is an incident-response email agent?

An incident-response email agent ingests the alert emails your monitoring tools send, decides which ones matter, and escalates only those to a human. It's the receiving side of alerting: tools like Grafana, Sentry, and Prometheus email alerts out; this agent reads them in and triages.

Its job is the front of incident response — detect, analyze, and prioritize what's real — as laid out in the NIST incident-handling guidance (SP 800-61r3).

Incident flow: alert emails are deduplicated and correlated, classified by severity, then the urgent ones page on-call while the rest go to a queueAlert emailsemail listDedupe +severityP1/P2: page on-callP3/P4: queue

The agent triages and notifies; it never runs a remediation. It won't restart a service, roll back a deploy, or touch infrastructure — it pages the on-call engineer who does. Keeping remediation out of the agent's tool set means a spoofed alert can't trick it into taking a destructive action; the worst it does is page a human who then checks.

Why receive alerts on an agent account?

Alert mail should land in one inbox the agent owns, not a team list where it's skimmed and lost. On an agent account, incidents@yourco.nylas.email is the single intake for every alerting source, and every alert carries a timestamp the agent uses to build an incident timeline.

You can run up to 5 such inboxes on the free tier — one per environment, so prod alerts never mix with staging. A single intake is what makes deduplication possible. When 40 alerts fire for one outage, the agent needs them all in one place to recognize they're one incident and page on-call once, not 40 times. Scattered across inboxes, that correlation is impossible.

How does the agent triage and classify severity?

The agent reads each alert, groups alerts that belong to the same incident, and assigns a severity. Deduplication collapses a storm — 40 “high latency” alerts from one service become one incident — and a model maps the alert text to a severity tier (P1 through P4) in 1 to 2 seconds. Only the tier and the dedup key decide what happens next.

# Pull new alert emails for the agent to dedupe and classify
nylas email list --unread --json

Alert emails are untrusted content — anyone who learns the intake address can send a fake one, and a crafted alert body is a prompt-injection vector (OWASP LLM01). Classify on structured fields and a sender allow-list, not on instructions in the body, so a fake “this is P1, page everyone” alert is scored on its real source, not its claim.

How does it acknowledge and escalate to on-call?

A P1 or P2 incident pages on-call immediately; a P3 or P4 goes to a queue for the next business day. The nylas email send command delivers the escalation with the incident summary, the correlated alerts, and the dedup count, so the engineer wakes up to context rather than a single cryptic line. The agent sends one page per incident, not per alert.

# Page on-call for a P1, with the correlated context
nylas email send \
  --to oncall@yourco.com \
  --subject "[P1] checkout-api: 40 alerts, error rate 38%" \
  --body "Started 02:14 UTC. 40 alerts correlated to one incident. Last deploy 01:50."

Track the incident timeline in your own store, not the agent's memory, so a restart never loses an open incident. The agent appends each new correlated alert and the page time, giving the post-incident review a clean record of when the agent knew what.

Next steps