On the homepage > Do you know where your email is? You show, Google, NSA, etc... but doesn't this service route email through your own servers to get to the b

On the homepage > Do you know where your email is? You show, Google, NSA, etc... but doesn't this service route email through your own servers to get to the box in my home? what makes your servers more secure than Google's at handling the emails? If I have to trust you to route the emails, I might as well just use something like Fastmail that hosts them too. More crucially, what can I do with the box if I ever stop paying you? or you go under, etc.