How to Format a Professional Email

A professional email follows a standard format: a short, specific subject line; a greeting; an opening line that says why you’re writing; a brief body; a courteous sign-off; and a signature with your contact details. Get those six parts in that order and your message will read as clear and professional.

If you’ve ever hovered over a blank message wondering whether to open with “Dear,” “Hi,” or nothing at all, that hesitation is normal — most people were never actually taught this, they just picked it up by imitation. The format isn’t arbitrary, though. Each part does a specific job, and once you can see what that job is, the choices that felt like guesswork start to make themselves.

The parts of a professional email format

Think of an email less as a block of text and as a small set of components, each with a distinct purpose. Handle them one at a time and the whole thing comes together.

The subject line

The subject line is the only part your recipient sees before deciding whether to open the message, so its whole job is to summarise your purpose at a glance. Guidance across email guides is consistent: keep it short and specific — roughly six to ten words — and describe the actual content rather than reaching for something vague. “Meeting request: Thursday 2pm” tells the reader exactly what’s inside; “Touching base” or “Quick question” makes them open the email to find out, which is the small friction that gets a message ignored or left for later.

The greeting

The greeting sets your tone before you’ve written a single line of content, and it’s really a formality dial rather than a fixed phrase. “Dear [Name],” is the safe choice for a formal or first-time email — to a professor, a recruiter, or someone senior you don’t know. “Hi [Name],” fits most routine, ongoing business correspondence. This is where the worry about sounding “too casual” or “too stiff” actually lives, and the answer is simply to match the greeting to your relationship with the reader rather than to a single rule.

The opening line

State why you’re writing in the very first sentence, before any context, apology, or pleasantry. Because emails are read fast and often on a phone, a purpose that arrives late often doesn’t arrive at all — the reader has already skimmed past it. One clean sentence (“I’m writing to ask about…” / “I’d like to confirm…”) orients the reader immediately and makes everything after it easier to follow.

The body

The body carries your actual message, and how you format it matters as much as what it says. The convention is block format: left-justified, single-spaced, with a blank line between paragraphs and no indentation. Keep paragraphs to two or three sentences, use bullet points when you’re listing more than a couple of items, and build the whole thing around one clear ask so the reader knows exactly what you need. Aim to keep a business email under roughly 200 words. Clear, well-structured writing like this is a habit more than a talent, and if you’re not sure how yours comes across, it’s worth checking where your communication stands.

The sign-off

Close with a phrase that matches the register you opened with. “Sincerely” or “Best regards” suits a formal email; “Best,” “Thanks,” or “Kind regards” fits a routine one. The mismatch to avoid is a warm, casual opening followed by a stiff, ceremonial close (or the reverse) — it reads as slightly off, like the two halves of the email were written by different people.

The signature

Your signature is the identity-and-contact block beneath your name: your full name, your job title, your organisation, and at least one way to reach you — a phone number, a website, or a professional profile. It exists so the recipient can place who you are and respond without hunting for your details. In a first-contact email especially, a thin or missing signature quietly makes you harder to take seriously and slower to reply to.

The skills that make a good email second nature

Read back over those six parts and you’ll notice how little of it is really about formatting. Choosing the right greeting, leading with your point, matching your tone to the reader, making a single clear ask — these are judgment calls, and they lean on a few underlying skills you can actually build.

Communication sits underneath all of it. The habits that make an email land — leading with your main message, being clear and direct, keeping it brief, and choosing writing only when it’s genuinely the right medium — are the core of communicating well at work. The format is simply where those habits become visible on the page.

Professional Behaviors shape the tone. The instinct to open with respect, calibrate your formality to the relationship, and close courteously is the same everyday etiquette that signals you’re straightforward and reliable to deal with. It’s what keeps a correctly formatted email from still landing as cold, abrupt, or careless.

Influence is why the structure earns its keep. Most emails exist to get something to happen — a reply, an approval, a decision — and a simple message with the ask placed up front is what makes it easy for the reader to act on. Good structure is quietly what turns a tidy email into one that actually moves things forward.

Those three are part of a set of twelve work skills that surface across almost any job, and the free Work Skills Test is built to show you which of yours are already doing their work and which would repay a little attention. Since it measures the very skills behind a clear, confident email, it’s a fast way to see which to build next.

Making it your own

You may already recognise some of this in how you write — perhaps you instinctively lead with your point, or you’ve learned the hard way that a vague subject line gets buried. None of these habits are fixed traits you either have or don’t; they’re skills, which means the ones you haven’t picked up yet are simply ones you can still learn, while you go on writing in a way that sounds like you. And they tend to count for more as you go: the further into a career you get, the more of your work happens over email, and the more a clear, well-judged message quietly sets you apart. The fact that you’re reading up on how to get this right already puts you ahead of the many people who never stop to think about it — which makes the next step a small one.

See where your skills stand

So the only thing left is to find out where your own skills sit today. The free Work Skills Test is a quick self-assessment of the work skills behind emails like these — Communication, Professional Behaviors, and Influence among them, alongside the others that shape how you come across at work. In about seven minutes it shows you where you’re already strong and which one or two skills would make the biggest difference to focus on next.

Take the skills test

Free to take, and it’s over in about 7 minutes.