A few years ago, I was promoted to manage the team I was in and realised after a while that if I’m working late, signing when off etc it puts pressure on the team to do the same. I decided for the good of the team and workplace not to do that. I prefer my free time anyway.
On the rare occasion I have worked late (from home), I’ve been known to compose a few mails and not click send until the next morning.
I don’t send any emails in the evening, just write, draft, send in the morning. No point sending them on the night!