> This page location: Functions > Templates > Send email with Resend
> Full Neon documentation index: https://neon.com/docs/llms.txt

# Send email with Resend

Send transactional email through the Resend API with a caller token.

- First Party: maintained by Neon
- Built by: Neon
- Categories: First Party, Email

## Install

```bash
neon functions new resend-email
```

## What it does

This template has a single handler and no named operations, so it's a starting point for your own code. To try it, run it locally with [`neon dev`](https://neon.com/docs/cli/dev.md) first, and deploy it to a branch with [`neon deploy`](https://neon.com/docs/compute/functions/deploy.md) once it works.

## Environment variables

The CLI declares these variables in `neon.ts` and adds them to `.env.example` without values, so you need to fill in the required ones before you run the function.

| Variable | Description | Required |
| --- | --- | --- |
| `RESEND_API_KEY` | API key from resend.com/api-keys with permission to send email. | Yes |
| `RESEND_FROM` | Verified sender address, for example Acme \<hello@example.com\>. | Yes |
| `RESEND_FUNCTION_TOKEN` | Random token (at least 32 characters, for example from openssl rand -hex 32) callers send as Authorization: Bearer \<token\>; required because Neon Function URLs are public. | Yes |

## Related

- Previous: [Durable workflow with Upstash Workflow](https://neon.com/functions/templates/upstash-workflow.md)
- Next: [Mastra agent with Postgres memory](https://neon.com/functions/templates/mastra.md)
- [All templates](https://neon.com/functions/templates.md)
- [Template source](https://github.com/neondatabase/examples/tree/main/registry/resend-email)
- [Use function templates](https://neon.com/docs/compute/functions/templates.md)
- [Contribute a function template](https://neon.com/docs/compute/functions/registry.md)

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