Simplified File Management

typo: recepients

I think it would help to explain a bit more at the top. This isn't just "file management", but a very specific kind. It's better with the back and forth of email, finding things later, what else? Maybe drive that home more.

Cool idea, I love using email in innovative ways given how broad it is.

cool! Need two seconds more to understand value, but cool.

At first sight target is more for companies or small business than personal use, or I'm wrong ?

I wonder which cloud, privacy policy, how can I delete all works exactly. For example: did you consider to use existing sender google drive to store data, for example ?

The message is almost clear and it's a good start point. My suggestions:

1. Add a screenshot from your app to the landing page (in features section for example)
2. I'd say redesign the FAQ section. The background image is not relative. Maybe add more FAQ items and use an accordion component.
3. Increase line-height of your header tags.
4. Your logo in footer is not aligned with the content.
5. Break "What makes it useful?" section into several sections so you can add more weight to each point.

Could you expand on the feedback you are looking for?