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Email etiquette

The shared habits that make work email clear and courteous, from a specific subject line and short paragraphs to careful use of reply all.

What It Means

Email etiquette is the set of habits that make work email easy to read, easy to find later and polite to receive. University writing guides, such as Purdue OWL's and MIT's, point to the same core: a subject line that says what the message is about, a short and direct body, a greeting and a signature, a tone you'd be happy to have read aloudReading aloudReading a book out loud with a child, from birth on. The AAP advises it because shared reading builds language, early literacy skills and the parent-child bond. See more, and care with reply all. Workplaces often add their own norms on top, such as how quickly replies are expected.

Try It: Pick the Better Move in Three Email Moments

Pick the better move in each moment. Based on university email guides.

You need a decision on the budget by Friday. Subject line?

A group email asks who can bring snacks. Only the organizer needs your answer.

A coworker's email annoyed you. Your reply is written.

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Out of3

How People Say It at Work

  • "Please stop replying all."
  • "Can you put the deadline in the subject line?"
  • "I wrote it, slept on it, and deleted half."

The Breakdown

Before you hit send (Buhata's suggestion, built on university email guides)

  1. Write a subject line with the topic and any deadline, so it can be found by search later.
  2. Open with a greeting that uses the person's name.
  3. Put the request or the main point in the first two lines.
  4. Keep paragraphs short, one idea each.
  5. Read it aloud to check the tone, and wait if you're angry.
  6. Check the To and Cc lines, and use reply all only when everyone on the thread needs your answer.
  7. Close with your name and a signature that says how to reach you.

Try it today. Take the next email you were about to send and rewrite only the subject line and the first two sentences, so the reader knows what you need without scrolling.

Timing. The boundaries at workBoundaries at workLimits a person sets and tells others about at work, covering their time, workload, availability and how they're treated. See more page covers how a manager's late-night emails can land with a team, and what to agree about after-hours messages.

Good to Know

Buhata's suggestion: since email can be forwarded, write each message as though people beyond the recipient might read it. Purdue OWL and MIT's communication lab both stress a professional tone, and UNC's guide offers templates for common requests. The async communication page describes one company's rule for when a long thread should become a call.

FAQ

What are the basic rules of email etiquette?

University guides agree on a clear, specific subject line, a short and direct message, a greeting and a signature, a professional tone, and care with reply all.

When should I use reply all?

Only when everyone on the thread needs your answer. The guides advise checkingChecking accountA bank or credit union account for everyday money going in and out, used by debit card, checks, transfers and direct deposit. See more the To line before you send, since a reply meant for one person can reach a whole list.

How formal should a work email be?

The university guides suggest a fairly formal tone, especially with people you don't know well, and never an angry one. Buhata's suggestion: with close colleagues, match the tone they use with you.

Do It in Buhata

Team Space and Focus

Post team updates as threads on a board in your Team Space instead of long reply-all chains, and use a Focus countdown to answer email in one block.

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Related Terms and Categories

  • Boundaries at work

    Limits a person sets and tells others about at work, covering their time, workload, availability and how they're treated.

  • Constructive feedback

    Specific, fact-based feedback that describes what someone did and its effect, so they can keep doing it or change it.

  • Cover letter

    A short letter sent with a resume that says which job you want, why you fit it and why this employer, in your own voice.

Work, career and remote life

Sources

Purdue University, Purdue OWL, "Email Etiquette"; MIT Biological Engineering Communication Lab, "Writing Professional Emails: Effective Strategies and Etiquette" (2025); MIT Biological Engineering Communication Lab, "Professional Email"; MIT Libraries, "Email Norms and Guidelines"; University of North Carolina, "Email Etiquette and Templates"

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