I want to know, since I am not a native English speaker, whether or not it is appropriate to reply to a thank-you email from a professor?
For example, if every time you get an email from a professor saying "Thanks," you reply "no problem" or "you are welcome."
Could it turn out to be annoying or offending if one replies to every "thank you"?
I realized sometimes misunderstanding may unnecessarily arise because of cultural differences. If one does not reply to a thank-you email from a professor, then would the professor be accordingly offended? On the other hand, if one constantly reply "you are welcome" or something like this, would he be instead considered prudish?