[acutesoftware]

Email and calendar are still the primary tools in my corporate job, despite trying and using many other collaboration tools.

Otherwise, email still used 'a bit' but only because no one else uses it socially anymore.

Calendar is never going to go away. You can call it calendar, diary, facebook events, reddit reminders but it is still the same thing - a way to work out what you need to do for the day, and remind you to do something in the future.