Where is the Data Dealer Squad when you need it?

Nylas N1 looks like an awesome alternative e-mail client for the future but I assume you should be very aware of the following issue before even installing it:

“(…) the user's entire email mailbox including all historical email is silently uploaded to your (i.e. Nylas) servers as the default behaviour for the application.”

And there is more. The N1 issue tracker is full with questions about privacy and security – and honestly: I think a lot of these valid concerns are answered quite lukewarmly (example).