I'm pretty sure all this is available right now. You can add CMS user, who will be able to manage mailboxes. And all the other features you've mentioned are available as well. Please contact our online chat support for help how to manage email.

This feature is available. You will find "My images and files" button in settings top menu.

This is a great idea. Let's vote.

This is a great idea. Thanks. Let's vote.

We've got CDN available with nearly 50 servers all over the world. There is one in India (Bangalore) as well

This is an interesting idea.

We are aware of scammers, and we're fighting them as hard as we can. We are deleting some 50-100 accounts every day. If you find something we did not find, please report it to our online chat support.

You are able to create popups right now. Here's a video on how to do that: 

You are able to upload files to media library, and then add a button on your website for your visitors to download that file.

Please contact our chat support if you have problems finding this feature.

Yes, we will do this.