We beg to differ. We built a new email client around the very idea that it could fix team collaboration: https://missiveapp.com
The thing is… with Sparrow, Mailbox and countless others before, it is getting really hard for a team like us to convince people to invest their time into our new product. People are increasingly worried that we will just fold/sell in the coming months and that their time will be lost.
Establishing credibility in the email space is hard and takes time, there is no shortcut, announcements like this one doesn't help us.