Slack is an asynchronous communications system. Disable notifications and only look at it when want, like you do for email. You won't be that person that is not

Slack is an asynchronous communications system. Disable notifications and only look at it when want, like you do for email. You won't be that person that is not reachable as you will be, but on your terms and not theirs. The main thing is to try to be consistent and communicate your process so that people can gauge their expectations.