Most of my career I considered myself an effective email communicator. That is until I had a conversation with one of the vice presidents within my company that made me rethink everything. She was the kind of person who was always on the go, so when I didn't get a response to an important email I stopped by her office and asked if she received my message. She explained she usually only reads the first 2-3 lines of any email. So if you need a response or anything else from her