3. Sending multiple messages when one will do the trick
信息分成很多條發送

While we’re on the topic of email faux pas, you should also refrain from being the person who sends 15 different emails when you can convey everything you need to say in a single message. That goes double for texts and instant messages.
在我們討論郵件問題時，還有一點要記住，一封郵件可以說完的話不要分成15封來發送。而人們在發送短信和即時消息時，有人可能會發30條。