So much day-to-day communication at work happens via email on or apps like Google Hangouts or Slack.
Yet most employees never receive formal training in email writing, because it's just like communicating in person, right?
A CEO of a $16 billion business says that the way you write emails could help or hinder your career.
CNBC asked several career experts to share their biggest do's and don'ts of email writing. Here are their top rules: