Recently, I had to write an email to one of my professors regarding an urgent matter. I was basically asking him for some guidance in the matter.
I am not a native speaker and normally I end my formal emails with 'Best regards'. Since this was important to me and I wanted a quick response I wanted to sign with 'Your hopefully'. I didn't know if this would be an appropriate way of ending a letter to a professor.
Is 'Yours hopefully' formal or informal? Is it still used to end letters with?
Note: I have read the following posts.