---
title: Resend (email)
slug: docs-agent/resend-email
docTags: 
createdAt: 2026-09-25T19:48:16.023Z
---

Send emails from your project: sign-up confirmations, receipts, notifications. Resend's free plan includes 100 emails a day.

## Connect

1. Create a free account at [resend.com](https://resend.com/signup). No credit card needed.
2. Copy your API key. It is shown after sign-up, or create one in [API Keys](https://resend.com/api-keys). It starts with `re_`.
3. Ask the Agent for an email feature, or open **Connections → Resend**, and paste the key.

## Send to your users: verify a domain

Until you verify a domain, emails are sent from `onboarding@resend.dev` and **only reach your own email address** (the one on your Resend account). That is enough for testing.

To email your users:

1. Add and verify your domain at [resend.com/domains](https://resend.com/domains).
2. Open the Resend connection and click **Re-check**.
3. In the connection's secrets, change `RESEND_FROM_EMAIL` to an address on your domain, like `hello@yourdomain.com`.

## Good to know

- If the connection says the key works but no domain is verified, emails still only reach you. Verify a domain as above.
- Usage and limits are managed in your Resend account.