As a person sending 3AM slack messages, I NEED you to do this.
I don't expect a reply at 3AM to a message asking you if you know about $WEIRD_THING and especially not when I send something like "remind me to talk to you about $FOOBAR on Monday"
Especially frustrating on evenings/weekends when people reply back quickly, but, on mobile and they can't effectively do the thing I need and are annoyed about not being able to do it right away and/or annoyed about me messaging them, but, I didn't need them to do it right then ANYWAY. I know it 10pm and you're heading to bed that's why I prefixed my message with "can you check tomorrow ...."
It leads me to not sending messages after-hours, which results in quick-small-tiny tasks/ideas being forgotten.
If it's really urgent, I'll call you!