Email etiquette is a delicate art, and one that’s important to master, considering the average worker spends 28% of their day checking email, a McKinsey & Company study found. But, when you use poor judgment in an email to your boss, co-worker, or client, you’ve created a digital record of your mistake that could come back to bite you.

As Jacqueline Whitmore, etiquette expert and founder of the Protocol School of Palm Beach, puts it: “An email is a permanent document that can be held against you.”

Another reason why the stakes are high: “Emails can be forwarded to anyone; they can even be posted on the Internet for the public to see,” warns executive coach Anne Marie Segal.

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