What your boss is doing is illegal. However, this isn't stopping manipulative bosses from ignoring labour laws and using the pandemic as an excuse for constant access to employees. If you can afford it, buy yourself a new phone. That's your new personal phone. Your boss doesn't get that number. The phone that your boss does have the number? That phone gets turned on at 9 am and turned off at quitting time. And consider looking for a new job. Life is too short to work for a crappy human being.

Have you talked with your boss about this? It’s quite likely that he’s just working at those times himself and he’s sending you these messages but not expecting you to deal with them until you actually start work. It’s amazing what can be accomplished with a simple conversation.

Tell your boss to go pound salt.
7 am Whatever .
It's not your damn company.
Make your requests at the office buddy and maybe I'll respond to them, maybe !
If your lucky :)

Your boss is just plain abusive. Good for you for setting boundaries. If he complains then bill him for the extra overtime hours and make sure to copy HR.

As a boss myself, I also send out emails to my employees early in the morning. I am in the office at 6:00 am, but I do not expect my employees to respond or act on my email requests until their official start time. It's just easier for me to send out all my emails first thing in the morning while the office is still quiet. Are you sure your boss expects you to act on those emails at 7:00 a.m., or is he/she just sending them at that time because it is convenient?

Totally, and there's no need to posture defensively about it either. Just because your boss picks those hours, don't mean you need to.

Sip your cuppa joe in peace baby!

…..it’s your *response* to email that is dominating you. Why are you even looking at it? Can’t it wait ‘til after coffee/breakfast?

and before you give notice to your present job, start calling your boss at 5 AM and ask him if he's f-ing his significant other before he starts his work day f-ing you :-)

If your boss wants you to work two hours earlier then you should be getting off work two hours earlier otherwise you should charge the two hours overtime.

I'll save them the effort it's bound to come..."privileged, grow up, lazy, idiot, give and take, dumb..." = things an employer says that doesn't care about your health or personal life to keep you controlled in an abusive relationship.