> ## Documentation Index
> Fetch the complete documentation index at: https://docs.mailblock.de/llms.txt
> Use this file to discover all available pages before exploring further.

# Introduction Mailblock

This is the documentation for Mailblock, a developer-first email delivery platform that lets you send transactional emails instantly without DNS setup.

Inside you’ll find everything from getting started to advanced domain setup, debugging, and SDK references. The documentation is continuously improving, and your feedback is always welcome.

<img className="block dark:hidden" src="https://mintcdn.com/mailblock/HvgZGFs14fyYDdNJ/images/hero-light.png?fit=max&auto=format&n=HvgZGFs14fyYDdNJ&q=85&s=1ed80c6fccde309c73e45b0cc2e45079" alt="Hero Light" width="2064" height="1104" data-path="images/hero-light.png" />

<img className="hidden dark:block" src="https://mintcdn.com/mailblock/HvgZGFs14fyYDdNJ/images/mailblock-blog.png?fit=max&auto=format&n=HvgZGFs14fyYDdNJ&q=85&s=632ddc43c2cf5ebc2d9708c7a9c7967f" alt="Hero Dark" title={true} width="1206" height="681" data-path="images/mailblock-blog.png" />

<CardGroup cols={2}>
  <Card title="Quickstart" icon="pen-to-square" href="/SDK/overview">
    Choose your Preferred SDK
  </Card>

  <Card title="How-To Guides" icon="image" href="/">
    Learn How to Setup a Custom Domain
  </Card>
</CardGroup>

## Tips for Using This Documentation

1. **New here?** Start with [Prerequisites](/basic-setup).
2. **Custom domain?** See [How-To Guides](/how-to/introduction).
3. **Want to code now?** Open the [SDK](quickstart) docs.
4. **Need help?** Copy the examples, use debug mode, and check error types.

## About MailBlock

Mailblock is a developer-first email delivery platform that makes sending transactional emails simple and reliable. With pre-verified domains and ready-to-use SDKs, you can start sending emails in minutes without complex DNS setup.

Mailblock provides built-in deliverability, analytics, and debugging tools so your messages reach the inbox with confidence.

## Found an Issue?

If you find any issues with the documentation:

* 📧 Email: [contact@mail-block.de](mailto:contact@mailblock.de)
* 💬 Include the specific documentation section and what needs clarification

***