Don’t check your work email while you’re on vacation.
Any work problem arising from a work email can linger in your mind making your vacation time into work time due to preoccupation. So you wind up neither relaxing nor being productive.
So focus on work or something else and don’t get caught in between, because time without attention isn’t time well spent. You’ll have a better vacation and those around you will be happier too if you stay away from your work email. Try to value attention over time.
If you can, make your vacation a vacation from email too.
Maybe you should say, “My email is on vacation this week.”