Source: https://cli.nylas.com/guides/incident-response-email-agent

# 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](https://cli.nylas.com/authors/caleb-geene) Director, Site Reliability Engineering

Updated June 14, 2026

> **TL;DR:** This agent is the receiving side of alerting. It reads alert emails with `nylas email list --unread --json`, deduplicates and severity-classifies them, then pages on-call for P1/P2 with `nylas email send` and queues the rest. It triages and notifies — it runs no remediation itself.

## 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)](https://csrc.nist.gov/pubs/sp/800/61/r3/final).

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.

```bash
# 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)](https://genai.owasp.org/llmrisk/llm01-prompt-injection/). 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.

```bash
# 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

- [Send Grafana Alert Emails](https://cli.nylas.com/guides/grafana-alert-emails-cli) — the sending side: getting alerts into the intake inbox
- [PagerDuty Email Notifications](https://cli.nylas.com/guides/pagerduty-email-notifications) — wiring an external pager to the escalation step
- [Build an AI Customer-Support Inbox](https://cli.nylas.com/guides/ai-support-inbox-agent-account) — the same read-classify-route loop for support tickets
- [Stop Your AI Agent From Going Rogue](https://cli.nylas.com/guides/stop-ai-agent-going-rogue) — why the agent has no remediation tool, only escalation
- [Full command reference](https://cli.nylas.com/docs/commands) — every `nylas email` subcommand and flag

## Try Nylas CLI

Install the CLI with `curl -fsSL https://cli.nylas.com/install.sh | bash` (macOS, Linux, WSL) or `brew install nylas/nylas-cli/nylas`, then run `nylas init` to create an account and authenticate.

**Free Sandbox** (no credit card): 5 connected accounts — bring your own Gmail, Outlook, Yahoo, iCloud, Exchange, or IMAP — plus 3 agent accounts (managed inboxes on `*.nylas.email`). Agent free plan: 3 GB storage, unlimited inbound, 200 sent emails/day, 5 rules, 1 `*.nylas.email` subdomain, and unlimited custom domains. Production is uncapped and requires a credit card: https://www.nylas.com/pricing/