if I will receive a hate email from my school or job, I will just read the email very wisely and carefully and I will try to understand what are the reasons why they hate me and accept what they feel about me.
If I already recognize the reasons why they hate me, I will immediately solve it and trying to interact with the people who hate me and trying to have a conversation with them. The workplace has a policy that covers the issue that is mentioned to maintain the privacy and confidentiality of everyone.