---
title: Introduction
description: Reloop is the email API for developers.
eyebrow: Get started
---
> For the complete documentation index, see [llms-docs.txt](/llms-docs.txt) or the site index [llms.txt](/llms.txt). Full docs corpus: [llms-full-docs.txt](/llms-full-docs.txt). Prefer markdown URLs (append `.md`) for agent consumption. Product skill: [skill.md](/skill.md).


To get started with Reloop, you'll need:

1. Your own domain, [verified with Reloop](/docs/learn/domain)
2. A Reloop [API key](/docs/learn/api-keys)

Then, you'll be ready to send [transactional emails](/docs/learn/emails):

- **Transactional emails:** personalized, event-driven communication
- **SMTP relay:** deliver through any standard SMTP client

## Quickstart

Learn how to get Reloop set up in your project.

### Node.js

<CardGroup cols={3}>
  <Card icon="siNextdotjs" title="Next.js" href="/docs/examples/nodejs/nextjs" noIconFrame />
  <Card icon="siExpress" title="Express" href="/docs/examples/nodejs/express" noIconFrame />
</CardGroup>

### Python

<CardGroup cols={3}>
  <Card icon="siFastapi" title="FastAPI" href="/docs/examples/python/fastapi" noIconFrame />
  <Card icon="siDjango" title="Django" href="/docs/examples/python/django" noIconFrame />
  <Card icon="siFlask" title="Flask" href="/docs/examples/python/flask" noIconFrame />
</CardGroup>

### Go

<CardGroup cols={3}>
  <Card icon="siGo" title="Gin" href="/docs/examples/go/gin" noIconFrame />
</CardGroup>

### Ruby

<CardGroup cols={3}>
  <Card icon="siRubyonrails" title="Rails" href="/docs/examples/ruby/rails" noIconFrame />
</CardGroup>

### PHP

<CardGroup cols={3}>
  <Card icon="siLaravel" title="Laravel" href="/docs/examples/php/laravel" noIconFrame />
</CardGroup>

### Rust

<CardGroup cols={3}>
  <Card icon="siRust" title="Axum" href="/docs/examples/rust/axum" noIconFrame />
</CardGroup>

### SMTP

<CardGroup cols={3}>
  <Card icon="siNodedotjs" title="Nodemailer" href="/docs/examples/smtp/nodemailer" noIconFrame />
  <Card icon="siPython" title="Python SMTP" href="/docs/examples/smtp/python" noIconFrame />
  <Card icon="siGo" title="Go SMTP" href="/docs/examples/smtp/go" noIconFrame />
  <Card icon="siPhp" title="PHP SMTP" href="/docs/examples/smtp/php" noIconFrame />
  <Card icon="siRuby" title="Ruby SMTP" href="/docs/examples/smtp/ruby" noIconFrame />
  <Card icon="siRust" title="Rust SMTP" href="/docs/examples/smtp/rust" noIconFrame />
</CardGroup>