The document is an example of a business email from Yuta Watanabe rescheduling a meeting from Thursday at 10am to Monday at 11am due to urgent travel to London. It apologizes for any inconvenience and requests the recipient let them know if Monday does not work. The document then discusses reasons to learn business email skills like using email in society and not wanting to be rude. It proposes taking email classes and practicing with professors and international friends to improve. The conclusion emphasizes the importance of learning email etiquette, such as when emailing bosses, to be prepared for future career use.