Thanks for trying out CloudMailin. We've done our best to create documentation that's helpful and contains the information you need. If you do need any help though feel free to contact us.
Remember, all the documentation is also open source, so if you think there's something you could improve feel free to also send us a pull request to the github account.
The Getting Started Guides cover getting CloudMailin setup and receiving your first emails.
If you're ready to start coding take a look at our Post Formats to see the format of the HTTP POST that CloudMailin will send to your web application.
Alternatively check out the Examples Section.