Hi! How should I formally end or sign an email to an authority in English? In Spanish, I would write "atentamente", is there any similar way? I noticed that some non-native people write "sincerely yours" in emails and formal writings. But my perception there could be an implication of too much closeness in that phrase and I would like to know if it is common or what people usually say. ( In the case of being right, is it something that you would send to your boss, doctor, or to the police station, haha). Thank you!