Is it appropriate to email a professor saying you enjoyed their class, after doing well in it? I recently finished taking an undergraduate class and I enjoyed it. I was thinking of emailing the prof and saying this, but I don't know if it's appropriate or not, for a few reasons:


I would have already said this in the class evaluations, which the prof will read.
More importantly, I recently received my final grade and it was good. If I email now, it might come off as an implied "thank you" for giving me a good mark, even though I mean nothing of the sort.


My question is whether or not such an email would be appropriate.
As my experience of being a TA for multiple courses with various profs, such personal gestures of appreciation are welcomed by the professors. I have actually heard professors refer to the email as something that "made their day". As long as you don't refer to your grades, I don't see a reason why someone would misjudge your intentions, especially after the course has finished.