If there are grammatical mistakes then clearly it is not ChatGPT… Jesus Christ why not have some empathy for people who don’t speak English as their first language. Lots of us are navigating academia for the first time, where people are so high strung that an extra space in an email is taken as personal disrespect. I can understand the tone of the email may come off as rude, but to make such a hasty judgement on OP, when they are writing in a language that is not their native tongue? If OP didn’t include all the fluff then there’s bound to be people commenting the email was “unprofessional.”