Filed in the bin
I have been on the receiving end of anonymous critique before. Thankfully not for some time.
Is there anything more hypocritical than an anonymous critique citing biblical sources for their authority?
Jesus is so clear. If you have a problem with your brother, go to them in private. Then take a friend, then take it before the church. (Matthew 18)
To cite your fear at being exposed or perhaps being disadvantaged as reason to remain anonymous perhaps informs you that you should not be writing and distributing such a email.
Or be quiet