# Resend installation

## Install the package

Use Bun first when possible:

```bash
bun add @workermailer/resend
```

If your project uses npm:

```bash
npm install @workermailer/resend
```

## Add your API key as a secret

```bash
wrangler secret put RESEND_API_KEY
```

If you want a default sender address available across sends, store that too.

```bash
wrangler secret put RESEND_FROM
```

## Minimal Worker config

This package uses `fetch`, so you do not need the socket-specific setup required by the SMTP package. A normal Worker deployment is enough as long as outbound HTTPS is available.

## Recommended environment shape

```ts
interface Env {
  RESEND_API_KEY: string;
  RESEND_FROM?: string;
}
```

## Local development

Because the package uses `fetch`, local development is simpler than SMTP. You can still choose to stub delivery in dev mode if you do not want to hit the real API.

```ts
if (import.meta.env?.DEV) {
  console.log('Skipping real Resend send in local development');
  return;
}
```