Does your email system allow you to schedule when you send emails? Like keep them in draft mode and then when you schedule, they all go out? If so, I'd schedule every single email in the future to be between business hours M-F only.

I mean, it's clear you're being targeted/singled out. I left a really good job because I was being trained by a person who was quite clearly out of her mind and had temper tantrums every single day and when I filed an unemployment claim they actually had an attorney show up for the telephone hearing and I of course was denied my claim. I'm still paying for it today, because I've had to get 2 jobs to make up the income.