AI agents with Resend webhooks

Receive Resend webhooks on Trigger.dev and use them to start, resume or message your AI agents.

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What you can do with Resend webhooks

Start an agent

Resend events can start a new agent run. For example, an agent that handles every Resend email that bounces.

Resume an agent

An agent can pause until the Resend event it needs arrives, for up to 90 days, and costs nothing while it waits.

Message an agent

Resend events can land in a running agent's conversation, so it acts on them with full context.

Events you can receive from Resend

Some of the events Resend sends. Your agent can filter on any of them.

View all events
email.sent

Email sent

email.delivered

Email delivered

email.bounced

Email bounced

email.complained

Email complained

email.opened

Email opened

email.clicked

Email link clicked

Example

An agent that handles every Resend email that bounces

import { webhook, webhooks } from "@trigger.dev/sdk";


export const resend = webhooks.endpoint.define({
  id: "resend",
  source: webhooks.resend(),
});


export const resendEvents = webhook({
  id: "resend-events",
  endpoint: resend,
  filter: "event.type == 'email.bounced'",
  onEvent: async ({ event }) => {
    // Start, resume or message your agent with the event
    console.log(event);
  },
});

Handled for you

Docs

Verified for you

webhooks.resend() checks the Resend signature on every request. Bad requests are rejected before anything runs.

Retries don't run twice

Retries are matched on the svix-id header, so a retried webhook doesn't start a second run.

Filter before anything runs

Only the Resend events you care about start a run. Filtered webhooks use no compute.

See every delivery

Every webhook is recorded with its payload, headers and the agents it reached, so you can debug it and replay it.

Get started

  1. 1

    Set up the agent

    Copy the starter prompt into your coding agent, like Claude Code, Cursor or Codex. It creates a Trigger.dev project and adds the webhook endpoint. Prefer to write it yourself? Start from the example above.

  2. 2

    Add the webhook in Resend

    Deploy your project, or run trigger dev, and the endpoint appears on the Webhooks page of the Trigger.dev dashboard with its URL. Add that URL in Resend's webhook settings and pick the events you need. The endpoint's Copy setup prompt button gives your coding agent the exact steps.

  3. 3

    Add Resend's signing secret

    Copy the signing secret from Resend. Then on the endpoint's page in the Trigger.dev dashboard, choose Set signing secret and paste it in, so Trigger.dev can check every request really came from Resend.

  4. 4

    Try it

    Send a test event from Resend, or use the endpoint's Test tab. It appears on the endpoint's Deliveries tab, with the agents it reached.

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Ready to build with Resend webhooks?

Declare an endpoint, deploy, and paste the URL into your provider.

Get started for free