> ## Documentation Index
> Fetch the complete documentation index at: https://resend.com/docs/llms.txt
> Use this file to discover all available pages before exploring further.
# Send emails with AWS Lambda
> Learn how to send your first email using AWS Lambda.
## Prerequisites
Before you start, you'll need:
* A Resend [API key](/create-an-api-key)
* A [verified domain](/add-a-domain)
## Guide
Go to [aws.amazon.com](https://aws.amazon.com) and create a new Lambda function using the Node.js 20.x or later runtime.
Paste the following code into the browser editor:
```js index.mjs theme={"theme":{"light":"github-light","dark":"vesper"}}
const RESEND_API_KEY = 're_xxxxxxxxx';
export const handler = async (event) => {
const res = await fetch('https://api.resend.com/emails', {
method: 'POST',
headers: {
'Content-Type': 'application/json',
'Authorization': `Bearer ${RESEND_API_KEY}`,
},
body: JSON.stringify({
from: 'Acme ',
to: ['delivered@resend.dev'],
subject: 'hello world',
html: 'it works!',
}),
});
if (res.ok) {
const data = await res.json();
return {
statusCode: 200,
body: data,
};
}
};
```
Click on `Deploy` and then `Test` at the top of the screen.
## Examples
See the full source code.