The greeting line in a business email is one sentence. Often just two or three words. Yet it carries more weight than its size suggests, because it's the first thing your reader evaluates before deciding whether the email deserves attention. A mismatched greeting can make a professional exchange feel clumsy before you've said anything of substance.
What a greeting line actually does
A greeting line does three jobs at once. It addresses the reader by name (or by role), sets the level of formality for the rest of the message, and signals whether the writer knows who they're talking to. Get all three right and the reader moves on to your content with confidence. Miss one and the message already has friction.
The greeting line is distinct from the subject line, which gets the email opened, and from the opening line of the email body, which carries your first substantive thought. The greeting is the bridge between the two: a brief, direct acknowledgement that says "this message is for you."
The main formats and when to use them
Most business email greeting lines fall into four categories. Each fits a different relationship and context.
"Hi [Name]," is the default for most internal emails and established professional relationships. It's warm without being casual, direct without being cold. Use it when you and the recipient have exchanged emails before or when the organisation's culture is broadly informal. "Hi Sarah," or "Hi Marcus," works for colleagues, clients you know well, and vendors you deal with regularly.
"Hello [Name]," sits one notch more formal than "Hi." It suits first-contact emails to external partners, emails to clients you haven't spoken to in some time, or any situation where "Hi" might feel a touch breezy. It doesn't require a first-name relationship, but it works equally well in one.
"Dear [Name]," is the formal standard. Use it for first emails to people significantly senior to you, correspondence that may be kept on record, messages to regulatory bodies or legal contacts, and any situation where the stakes are high enough that warmth is a risk. "Dear Ms. Chen," or "Dear Dr. Okafor," signals that you know the conventions and respect the context.
"Good morning / Good afternoon [Name]," is a friendly opener that adds a time-of-day acknowledgement. It works in some industries and cultures, particularly in customer-facing roles. In others it can feel slightly performative. Skip it if you're not sure how it will land.
The name question: first name, full name, or title?
This is where writers most often go wrong. The default in most English-language professional contexts is first name only: "Hi James," not "Hi James Mitchell,". Using a full name in a greeting line reads as oddly formal at best, and slightly menacing at worst.
When using "Dear," the convention shifts. "Dear James," works in a warm-formal context. "Dear Mr. Mitchell," is right for strict formality or when you genuinely don't know the person. If you're addressing a contact you've only seen in a directory and whose name suggests they may prefer a particular title, default to "Dear [Title] [Surname]," and let them correct you if needed.
One rule that holds across every format: spell the name correctly. Check it against the email signature, the calendar invite, or the company website. A misspelled name in a greeting line tells the reader you didn't look.
Group emails and how to handle them
When an email goes to more than one person, the greeting line needs to account for all of them without becoming a list. "Hi all," and "Hi team," are the two standard options for internal group emails. Both are fine. "Hi all" is slightly more neutral; "Hi team" implies a shared purpose or project, which can feel either unifying or presumptuous depending on the group.
For external groups, "Dear all," carries the formality that "Hi all" sometimes lacks. "To the [Project Name] team," works when the group shares a clear identity. Avoid listing every name in the greeting line once the group exceeds two people. Beyond two names, the greeting becomes unwieldy and the email feels bureaucratic before it starts. You can find more on addressing multiple people in an email or letter if you're working with larger or mixed audiences.
What to do when you don't know the name
The worst-case scenario is a genuine unknown: you have no name, no title, no LinkedIn profile, nothing. In that situation, "Dear Sir or Madam," is technically correct but sounds like it was written in 1985. "Hello," on its own is a better modern option. It's brief, neutral, and doesn't make assumptions about gender or title.
A better answer is to find the name before you send. Most professional contacts have a public email signature, a company directory, or a website bio. Spending 90 seconds on that research produces a better email and a better first impression than any anonymous greeting can.
Punctuation after the greeting
In American English, a comma follows the greeting in informal emails ("Hi Sarah,") and either a comma or a colon follows in formal ones ("Dear Ms. Chen," or "Dear Ms. Chen:"). The colon is particularly common in American business letter tradition but less so in email. British and Australian conventions lean toward the comma in almost all contexts.
One thing that confuses writers: the first word of the line after the greeting is capitalised regardless. Whether you write "Hi James," or "Dear Ms. Chen:", the following line begins with a capital. That's standard across all styles.
Common mistakes worth avoiding
A few patterns show up constantly in professional inboxes and consistently undermine the message.
- No greeting at all. Jumping straight into the message body without any opener reads as abrupt in formal contexts and can feel rude in first-contact emails. Unless you're in a rapid back-and-forth thread where pleasantries genuinely slow things down, include a greeting.
- Overly effusive openers. "Dear Most Esteemed Mr. Brown," or "Hello there, wonderful colleague!" both read as forced. Keep the greeting calibrated to the relationship.
- Wrong gender assumption. "Dear Sir," when the recipient is a woman, or "Dear Ms.," for a man, is an easy mistake that's hard to recover from. When in doubt, use first name only or a neutral form.
- Copy-paste errors. A greeting that addresses the wrong person is one of the most embarrassing mistakes in professional email. It signals that the email was written for someone else and forwarded without review.
How the greeting connects to the rest of the message
The greeting line sets a register that the whole email should maintain. A "Dear Mr. Hollingsworth," opener followed by three paragraphs of casual language creates a jarring mismatch. So does a "Hey!" opener in a message requesting a legal review of a contract.
Once you've chosen the right greeting, let it guide your word choices through to the close. If you're writing a warm, first-name greeting, a sign-off like "Best" or "Warm regards" matches the register. If you've opened with "Dear Dr. Patel," then "Yours sincerely" or "Kind regards" is the more appropriate close. Consistency from greeting to sign-off is what makes the whole message feel deliberate rather than assembled from parts.
The greeting line takes three seconds to write. It takes far longer to rebuild the impression left by a careless one. Treating it as a throwaway is the same mistake as treating the subject line as a throwaway. Both deserve a moment's thought before you hit send.