There has been a lot of cargo-culted best practice in the last 5-10 years that is unjustified busy-work. I have a little secret in the same vain. I turn off all email notifications, and have no apps on my phone. Never been an issue. I just check the source when it makes sense during my work day. No more senseless interruptions, no worrying about things that aren't actually on my agenda. A smooth workflow and peace of mind.