Send an email via Resend

Let your AI send transactional email via Resend; the API key stays server-side.

Send a plain-text email through the Resend API to a fixed recipient. The API key rides the Authorization header and is resolved server-side at delivery; sender and recipient are fixed at install, so the agent composes content, never addresses.

The credential never enters the model context: it lives in the FlurryPORT secret store, deliveries are signed server-side, and every send returns a receipt your agent can quote.

npx flurryport mcp

Tools your agent gains

flry_resend_send_email

Send a plain-text email to the configured recipient via Resend. Input: subject (required), text (required, plain-text body).

Setup walkthrough

1. RESEND_API_KEY: At resend.com: API Keys, Create API key, permission Sending access (Full access is more than this recipe needs), domain All domains. Copy the re_ key and paste it into the FlurryPORT secret page.

Intent schema

{
  "type": "object",
  "required": [
    "subject",
    "text"
  ],
  "properties": {
    "subject": {
      "type": "string",
      "maxLength": 300
    },
    "text": {
      "type": "string",
      "description": "Plain-text email body."
    }
  }
}

Install-time parameters

to

install-time: Fixed recipient for this install; the agent never chooses addresses at send time.

from

install-time: Sender address; constrained by Resend domain verification.

Transformation

{ "from": $install.from, "to": [ $install.to ], "subject": $body.subject, "text": $body.text }

Delivery target

POST https://api.resend.com/emails

Placeholders like $secrets.NAME resolve server-side at delivery, never in the agent.

Gotchas

• Before a domain is verified, sends to any address other than your own Resend account email answer 403, and the sender must be onboarding@resend.dev exactly.
• Success is 200 with an id; free tier allows about 2 requests per second and 100 emails per day.
• The recipient is install-time config on purpose: a compromised or confused agent cannot redirect mail at send time.

Where this fits

• Destination: Resend
• Email recipes
• What agent tokens can and cannot do
• All recipes

Related recipes