Good email etiquette is less about formality and more about making a message easy to read and act on. A few habits go a long way.
Write a specific subject line
A subject line like “Question” or “Update” gives the reader nothing to prioritize by. Something like “Need budget approval by Friday” tells them exactly what’s inside and how urgent it is, before they even open the message.
Get to the point early
Put the main ask or piece of information in the first sentence or two. Readers often skim, and burying the actual point in the third paragraph means it’s more likely to be missed or acted on late.
Keep one topic per email
Mixing multiple unrelated requests into one email makes it easy for the recipient to respond to one and forget the other. Separate emails, or at minimum clearly numbered points, keep things trackable.
Match the reader’s expected tone
A quick note to a colleague you talk to daily can be casual; a first message to someone outside your organization usually warrants a more formal greeting and sign-off. When in doubt, err slightly more formal until you know the relationship better.
Use reply-all sparingly
Before hitting reply-all, ask whether everyone on the thread genuinely needs your response. Overuse of reply-all is one of the most common sources of inbox clutter in group or work settings.
Frequently asked questions
Should every email have a formal greeting?
Not necessarily — match the formality to your relationship with the recipient and the context of the message.
How long should a typical email be?
Short enough to make the point clearly, usually a few sentences to a few short paragraphs; longer messages benefit from headers or bullet points.
Is it rude to send a one-line reply?
No, for straightforward acknowledgments a short reply is often the most respectful use of the recipient’s time.