So... what does it do? It seems to somehow organize my emails as tasks, but how does that work in practice? What happens when I get an email? Does it turn it

So... what does it do? It seems to somehow organize my emails as tasks, but how does that work in practice? What happens when I get an email? Does it turn it into a task? Can other people still interact as usual with me by email without using this software? What about emails that really are not todo items?