copy# Resend > Developer-first email API. Simple, fast, and built for modern apps. ## Overview Resend is a modern email API designed for developers. Send transactional emails with a clean REST API, React Email templates, and built-in analytics. The API is intentionally simple. One endpoint to send, one to check status. Built by the creators of React Email, Resend focuses on developer experience. You can use React components to build email templates, or send plain HTML. Domain verification is straightforward and the dashboard shows delivery status in real time. - **Base URL:** https://api.resend.com - **Auth type:** bearer - **Token format:** re_... ## Get Your API Key 1. Go to resend.com and sign in 2. Navigate to API Keys in the sidebar 3. Click Create API Key 4. Choose access level and domain scope 5. Copy the key. It starts with re_ ## Quick Connect bashcurl -X POST https://api.liteio.dev/connections \ -H "Authorization: Bearer $TOKEN" \ -H "Content-Type: application/json" \ -d '{ "name": "Resend", "base_url": "https://api.resend.com", "auth_type": "bearer", "auth_config": {"token": "re_..."} }' ## Key Endpoints MethodPathDescription POST/emailsSend an email GET/emails/{id}Get email delivery status POST/emails/batchSend up to 100 emails in one request GET/domainsList verified sending domains POST/domainsAdd a sending domain POST/audiences/{id}/contactsAdd a contact to an audience GET/audiencesList audiences ## Example: Send Email bashcurl -X POST https://api.liteio.dev/proxy/cn_xxx/emails \ -H "Authorization: Bearer $TOKEN" \ -H "Content-Type: application/json" \ -d '{ "from": "hello@yourapp.com", "to": ["user@example.com"], "subject": "Welcome!", "html": "

Welcome aboard

Thanks for signing up.

" }' ## Use Cases - **Transactional Email**: Signup confirmations, password resets, and receipts with high deliverability. - **React Email Templates**: Build email templates as React components with full IDE support. - **Batch Sending**: Send up to 100 personalized emails in a single API call. - **Developer Notifications**: Alert your team about deploys, errors, and system events via email. ## Links - Back to Marketplace - Developer Guide - Get API Key