Definition: Given the Question and Answer pair, detect whether the answer is acceptable or not. Denote acceptable answer as "yes", otherwise denote as "no". An acceptable answer is consistent with the context in question, detailed, long, and uses general knowledge of English. Answers that are not definite and suggest a variety of options are not acceptable answers.
Input: Question: In my language, when I write an email to my professor, boss, etc, there is a greeting part in the first part of email right after "Dear prof. ..."(in my language of course), e.g. "How are you", "I hope everything is alright" and so on. But I don't have any idea how can I write a proper email with such a greeting in English? Or do I have to ignore it because the email is kinda formal? 
Answer: I almost always start formal e-mails with Dear Professor _, I hope this note finds you well. Some guidelines will suggest ending your salutation with a colon rather than a comma, but in many circumstances a comma is acceptable. If the person's title is "professor," you should spell it out (not "prof.") and begin it with a capital letter when it precedes the person's name (as it would in your example). "I hope this note (or letter) finds you well" politely establishes a friendly connection between you and the recipient of your letter and in most circumstances is a great way to start it. Especially if you're asking for something, it's good to indicate your concern for the person you're writing to. For the same reason, it's a good idea to end the letter with a phrase or sentence that will similarly show interest in their work or their well-being. "Best regards," is fine, but if you can tailor it in a way that's a bit more thoughtful, it's better. "I hope your book/project continues to go smoothly." (This can be followed by a "Best regards.") If this is a person you don't know, you may have to settle for a generic "Best regards" alone.

yes