I wish that Proton would allow single sign-on for all payment levels. I am tired of having to sign into all the apps separately and it is not time consuming but rather a inconvenience. I would rather have the ability to open mail, sign in, then open pass or calendar or drive and be signed in. The fact that my account is already on my device, should carry over to the other apps. This should be available to ALL paying customers and not just business.