When you (or You:)) write a letter to someone you..say respect, do you usually write 'you' as 'You', i.e. with a capital Y.<br/><br/>Example:<br/><br/>''Dear professor XY,<br/><br/>I want to thank You for....''<br/><br/>Is that something that is often used in English language or not used at all?<br/><br/>Tnx!