If you've ever agonized over the wording in an email by rereading it four times before hitting send, and still didn't get a response, you might need to take a step back and brush up on your digital communication skills.

We spent the last three years studying the science of emotions and their intersection with our lives at work for our new book, "No Hard Feelings: The Secret Power of Embracing Emotions at Work," and so many of the questions we were asked were about (yep, you guessed it) email.