One of the reasons you might waste time writing an email is figuring out how to phrase it.
Stringer says email is best used to accomplish quick goals, such as sharing documents or setting up meetings and deadlines, adding, "a long email is a signal you're using the wrong communication tool."
Fundera finds millennials, baby boomers and Gen Xers all feel concerned about others misinterpreting the tone of what they have written in their emails. Overall, the firm finds millennials were most concerned about miscommunication over tone.
Workplace expert Dan Schawbel tells CNBC Make It: "One of the biggest mistakes is treating everyone at work like they are your friends and writing casual emails, instead of knowing your audience and then shaping your language, the length and the tone of the email to that individual."
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