I recently got a new job where the email is completely locked down (only accessible on a networked computer or via the awful outlook web interface). It's been awesome not getting work emails on my phone.
I used to have work email and slack on my phone. While it made some things easier (heading out in the work day and not blocking people who might need my input, for example), it also made me feel tethered. Slack in particular was very addictive to me (to be fair, not just work slack, but other slacks which I was on).
When I got a new phone, I simply didn't install the email or slack clients. It's led to occasional text messages, when I really needed to communicate with a team member, but all in all has been a fantastic experience. Highly recommended.
One of the things I miss most about my previous BigCo job was only being able access work tools via my work phone. I could go on vacation and tell my team that I wasn't taking my work phone or computer (I needed a corporate VPN installed on my work computer to access anything internal) and everyone knew I was completely unreachable.
