100+ Email Sign-Offs: How to Sign Off an Email Professionally in 2026

You have written the whole email. The greeting was right, the message is clear, the ask is in there. Then the cursor sits on the last line and you stall — because you do not actually know how to end it. "Best"? "Regards"? "Best regards"? "Thanks"? "Cheers"? "Sincerely" feels like a cover letter, "Cheers" feels like you are British when you are not, and "Warmly" feels like too much for an email about a calendar invite. So you type "Best," out of habit, hit send, and move on — the same way roughly half the professional world does.

The sign-off is a small thing that does more work than it looks like. It is the last impression the reader takes from the message — the note the email ends on. A sign-off that fits the relationship makes the whole email feel considered and easy to answer. One that is too stiff makes a friendly note read cold; one that is too casual makes a serious request read like you did not take it seriously. And a missing sign-off — just your name, or no name at all — quietly reads as curt, even when you did not mean it that way.

This guide is the complete reference. You will get more than a hundred sign-offs organized by exactly the thing that matters — how formal they are — so you can find the right register in a second instead of guessing. There is a master table that maps each closing to its tone and the situation it fits, deep sections on formal, friendly, and thank-you closings, an honest list of the sign-offs to drop and why, the actual reply-rate data on which closings perform, the regional differences that trip people up, and a simple rule for matching your sign-off to your greeting and tone so the email reads as one consistent voice.

We will keep it practical and plain. No "it depends" without telling you what it depends on, and a clear default you can fall back on when you genuinely do not want to think about it. Near the end we look at the part nobody mentions — that you make this decision on every email, all day — and what an AI-native email client does about it so the right sign-off lands without you stopping to choose.

What does an email sign-off actually do?

A sign-off is the short closing line before your name — "Best regards," "Thanks," "Sincerely," "Cheers." On the surface it is a formality, a polite way to stop. But it does three jobs at once, and understanding them is what lets you pick the right one instead of defaulting to whatever your fingers type.

First, it sets the closing tone. The reader reaches the end of your message and the sign-off is the last word — the emotional note the email rests on. "Sincerely" lands formal and a little distant. "Thanks so much" lands warm and grateful. "Cheers" lands light and friendly. Because it is the last thing read, it has outsized weight on how the whole email feels, the same way the last line of a conversation colors how you remember it.

Second, it signals the relationship. The gap between "Yours sincerely" and "Talk soon" is a gap in how close you are to the recipient and how formal the context is. Choosing a sign-off is really choosing how to position the relationship — respectful distance, warm colleague, easy familiarity. Get it right and the reader feels read correctly. Get it wrong — too formal with a friend, too casual with a stranger — and there is a small, real note of friction.

Third, it closes cleanly and points to the name. A sign-off plus your name is the visual and social signal that the message is over and who it is from. Skipping it does not feel efficient to the reader; it feels abrupt, like hanging up without saying goodbye. That is why even a one-line reply usually reads better with a quick "Thanks," than with nothing. The sign-off is small, but it is doing the work of ending the conversation on the right note.

There is a fourth, quieter job worth naming: the sign-off is where a reader who scans rather than reads — which is most readers, most of the time — lands their eye to confirm two things fast, who sent this and how they feel about it. People skim the top of an email for the ask and the bottom for the tone and the name. A closing that fits tells a skimming reader, in a single beat, that the message is friendly and finished and from someone who put thought into it. A jarring or missing one makes them reread to figure out whether something is off. In that sense the sign-off is not decoration at the end; it is the last piece of information the email delivers, and like any piece of information it can be right, wrong, or absent.

What are the best email sign-offs, ranked by formality?

Almost every choice comes down to one question: how formal does this email need to be? So the most useful way to hold the whole list is on a single scale, from buttoned-up formal to genuinely casual. Find where your email sits on that scale and the right sign-off is right there.

Here is the master table — the closings that actually carry professional email, mapped to their tone and the situation each one fits. If you only read one part of this guide, read this. The rule of thumb underneath it: when you are unsure, go one notch more formal than feels necessary. It is far easier to recover from being slightly too polite than from being too casual with the wrong person.

A few notes on reading the table. The middle of the scale — "Kind regards," "Best regards," "Thanks" — is where the overwhelming majority of real professional email lives, because most of your messages are neither stiffly formal nor truly casual. The extremes ("Yours faithfully," "Talk soon") are for the edges: the formal letter and the close colleague. If you spend your day unsure which to use, anchor on "Best regards" and adjust from there. We will break down each band — formal, friendly, and thank-you — in the sections that follow.

Which sign-offs are best for formal emails?

Formal sign-offs are for the messages where respect and distance are the point — a cover letter, a message to someone senior you have never met, an official or legal context, a first approach to a client. The reader does not know you yet, and the closing should signal that you take the exchange seriously. These run from the most formal letter conventions down to the polite-professional closings you will reach for most often.

At the top of the scale sit the traditional letter sign-offs. "Yours sincerely" (or simply "Sincerely" in American usage) is the standard for a formal message where you addressed the person by name — a job application, a formal request, a letter of complaint. In British convention there is a paired rule worth knowing: if you opened with a name ("Dear Ms. Okafor"), you close with "Yours sincerely"; if you opened with "Dear Sir or Madam" because you do not have a name, you close with "Yours faithfully." Americans rarely use "Yours faithfully" and lean on "Sincerely" across the board.

Just below those are the closings that do the real work of formal email today. "Kind regards" is polite, professional, and warmer than bare "Regards" — it is the standard safe choice for clients, new contacts, and anyone outside your team. "Best regards" is its slightly more versatile sibling, formal enough for the most senior reader yet comfortable with a colleague, which is why it is the single best default in all of professional email. "Respectfully" is reserved for genuinely formal or hierarchical contexts — addressing an official, a court, or a dignitary — and reads as overly stiff anywhere else. Here is the formal set, from most to least formal.

Two practical cautions. First, plain "Regards" — with no "Best" or "Kind" in front — can read a touch curt to some readers, almost clipped. It is not wrong, but if you want warmth, "Best regards" or "Kind regards" costs you one word and removes the risk. Second, do not over-formalize a relationship that has already warmed up. If you have traded five friendly emails with a client, switching back to "Yours sincerely" feels like a cold step backward. Formality is a starting position you relax as the relationship grows, not a costume you keep wearing once you actually know the person.

A word on the mechanics, because they signal care as much as the words do. Put the sign-off on its own line, follow it with a comma, and start your name on the next line — that is the convention every reader's eye expects. Capitalize only the first word: "Best regards," not "Best Regards," and "Kind regards," not "Kind Regards." The capital-on-every-word version is a small, common tell that reads as slightly off to anyone who notices. And keep the sign-off and your signature block from fighting each other — if your signature already states your full name, role, and company, you do not need to repeat all of it above the line; the closing plus a first name (or full name for formal first contact) is enough, with the signature carrying the rest.

What are good friendly and casual email sign-offs?

Most email is not formal. It goes to colleagues you talk to every day, contacts you have an easy rapport with, threads that are already a back-and-forth. Forcing "Yours sincerely" onto those reads stiff and a little odd, like wearing a suit to a coffee chat. Friendly and casual sign-offs keep the message human while staying entirely professional — warm without being unprofessional, light without being sloppy.

The friendly-neutral workhorse is "Best." It is short, inoffensive, and reads as professional-but-relaxed — the default for internal email at a huge number of companies. "All the best" is its slightly warmer cousin, good for closing out a thread or wishing someone well. "Warm regards" and "Warmly" add genuine warmth and work beautifully for people you actually know — but be careful aiming them at strangers, where they can feel more intimate than the relationship supports. "Take care" and "Talk soon" lean personal and friendly; use them with people you are genuinely in touch with, not a first cold email.

Then there is "Cheers." It is upbeat, casual, and completely normal in the UK and Australia, where it reads as standard-friendly. In American business contexts it lands as a deliberate informality — fine for internal notes and people you know, but it can feel too breezy for a serious request or a senior external contact. Use it where rapport already exists. Here is the friendly-to-casual set.

The judgment call with casual sign-offs is rapport, not rules. The same "Cheers" that feels perfectly friendly to a teammate can feel presumptuous to a client you emailed once. A useful gut check: would this sign-off feel natural if you said it out loud to the person? "Talk soon" to a close collaborator, yes. "Talk soon" to a hiring manager you have never met, no. When the relationship is new or the stakes are real, step back up to "Best regards" or "Thanks" and save the casual closings for the people who have earned them.

When should you use a thank-you sign-off?

Gratitude closings are their own category because they do something the others do not: they signal appreciation right at the end, where it lands hardest. "Thanks," "Thank you," "Many thanks," "Thanks in advance," "With appreciation" — these work when the email either asks for something or follows something the person did for you. And as the reply-rate data later in this guide shows, they are not just polite; gratitude closings measurably outperform neutral ones at getting a response.

Use a thank-you close when there is something to be thankful for, real or anticipated. If you are asking a favor — a review, an introduction, a quick answer — "Thanks" or "Many thanks" closes warmly and acknowledges that you are taking their time. If they already helped you, "Thank you" or "Thanks so much" is the natural, gracious end. "Thanks in advance" is the assertive version: it works when you are reasonably confident the person will do the thing, but it can read as presumptuous if the request is large or the relationship is new, because it answers "yes" on their behalf before they have. For a big ask, plain "Thank you" is safer.

There is a real difference between "Thanks" and "Thank you" worth knowing. "Thanks" is lighter and more casual — perfect for quick internal notes and ongoing threads. "Thank you" is a touch more formal and more sincere — better when the gratitude is genuine or the reader is senior or external. "Many thanks" sits politely in between and reads slightly more British. And "With appreciation" or "With gratitude" raises the register for a formal thank-you to someone senior. Here is the gratitude set, light to formal.

Which email sign-offs should you avoid?

Some closings reliably work against you — they read as lazy, too familiar, or out of place, and they color the whole email even when the rest of it is sharp. Here is the honest list of what to drop in professional email, with the reason each one lands wrong, so you are deciding on purpose rather than by reflex.

The biggest one is no sign-off at all. Ending with just your name — or nothing — reads as curt, and the data backs this: emails with no closing get noticeably fewer replies than emails with one. It feels efficient to you and abrupt to the reader. Even a single "Thanks," fixes it. Right behind it is "Sent from my iPhone" used as your actual sign-off, or left on while you are clearly at a desk. As a genuine mobile signature it is fine and even sets expectations for brevity; pasted onto a considered email from your laptop, it reads as "I could not be bothered to sign off properly."

Then there are the closings that are too casual or too intimate for work. "Thx," "Rgds," "TTYL," and other abbreviations look like you could not spare the two seconds to type the word, and shorthand signals low effort. "xoxo," "Love," "Hugs," and "Kisses" are warm in the wrong way for almost any professional relationship — save them for people you actually hug. "Cheers" and "Warmly" are not banned, but they misfire with the wrong audience: "Cheers" can feel too breezy for a serious or senior message, and "Warmly" can feel oddly intimate with a stranger. And cutesy or jokey closings — "Toodles," "Stay classy," "May the force be with you" — undercut your credibility outside a genuinely playful relationship. The table lays out the avoid-list and the swap.

The pattern across the whole avoid-list is mismatch: the closing is fine somewhere, just not where it was used. "xoxo" is right with your sister and wrong with a vendor. "Sent from my iPhone" is honest on your phone and lazy on your laptop. "Cheers" is friendly with a teammate and flippant with a regulator. So the fix is never "memorize the banned words" — it is read the relationship and the stakes, then pick a closing that fits both. When in doubt, the neutral middle ("Best regards," "Thanks") is the one that is hard to get wrong.

Does your sign-off actually affect replies?

It is fair to ask whether any of this moves the needle or is just etiquette for its own sake. The data says it moves the needle. The most-cited study comes from Boomerang, which analyzed hundreds of thousands of email threads and measured response rate by closing — and the spread between the best and worst sign-offs was large enough to matter on any real volume of email.

The headline finding: gratitude wins. Closings built on thanks consistently drew the highest response rates — "Thanks in advance" led the field at roughly 66%, with "Thanks" and "Thank you" close behind in the high 50s to low 60s. The neutral professional defaults trailed them: "Best" landed around 51% and "Regards" around 53%. In Boomerang's data that is a gap of well over ten percentage points between a grateful close and a neutral one — on a thousand emails, roughly a hundred-plus extra replies, just from how you signed off. The effect lines up with older behavioral research (Grant and Gino, 2010) showing that a simple expression of gratitude markedly increased people's willingness to help.

The other clear signal is that having a sign-off at all beats having none. Emails that ended with no closing underperformed those with one — leaving off a sign-off was associated with measurably fewer replies. The takeaway is not "paste 'Thanks in advance' onto everything"; that close only fits when you are actually asking for something and reasonably expect a yes. The takeaway is that a warm, genuine, fitting close is doing real work, and a missing or careless one is quietly costing you responses.

Two honest caveats on the numbers. First, much of this data comes from outreach and cold-email contexts, where the recipient is deciding whether to engage at all, so a warm gratitude close has the most room to help; in an active thread with a colleague the effect is smaller. Second, correlation is not a magic phrase — "Thanks in advance" does not earn a reply by itself; it tends to appear on emails that already have a clear, reasonable ask, and the close reinforces that. The practical reading still holds: be genuinely appreciative when there is something to appreciate, always include a fitting sign-off, and never end on nothing.

Do email sign-offs differ by country and culture?

They do, and the differences are sharp enough to cause real misreads if you assume your norm is universal. The same closing can read as warm in one country and stiff or curt in another, so if you write across borders it is worth knowing where the lines are.

The clearest split is US versus UK. In American business email, plain "Regards" or "Best" is normal and reads fine. In the UK, bare "Regards" can come across as slightly cool or even abrupt, which is why British writers reach for "Kind regards" as the everyday default — and the formal pairing rule ("Yours sincerely" with a name, "Yours faithfully" without one) is still genuinely observed in formal UK letters in a way Americans mostly ignore. "Cheers" is standard-friendly in the UK and Australia and reads as a deliberate informality in the US. So "Kind regards" travels best across English-speaking markets — it is polite everywhere and cool nowhere.

Beyond the Anglosphere, formality expectations rise. German business email leans more formal and structured; the full convention is "Mit freundlichen Grüßen" ("with friendly greetings"), often abbreviated "MfG," with "Liebe Grüße" ("LG") reserved for warmer, more familiar contacts. In Japan and much of East Asia, email norms emphasize hierarchy, courtesy, and longer closing pleasantries — a blunt one-word sign-off can read as abrupt where a more deferential, relationship-acknowledging close is expected. Researchers frame this as low-context cultures (the US, UK, Germany — more direct, the words carry the meaning) versus high-context cultures (Japan, much of the Middle East and parts of Asia — more relational, more is implied), and email formality tends to track that divide. Here is the quick cross-border reference.

The practical rule when you are writing to someone in another country: match up, not down. If you are unsure how formal their culture runs, err toward more formal and let them set a more relaxed tone if they want to. "Kind regards" or "Best regards" is the closing that is safe in nearly every market — it never reads as too casual, and it never reads as cold. Save your local casual habits ("Cheers," "Thanks!," "Talk soon") for the cultures and relationships where you know they fit.

How do you match your sign-off to your greeting and tone?

A sign-off does not live alone. It is the bookend to your greeting, and the two need to agree, because a reader feels a mismatch even if they cannot name it. Open formal and close casual — "Dear Dr. Adeyemi" … "Cheers!" — and the email reads as two different people wrote the top and bottom. The fix is one rule: keep the greeting, the body, and the sign-off at the same level of formality. Pick your register once and carry it all the way through.

The simplest way to apply this is to think in three tiers. Formal: a "Dear [Name]" or "Dear Mr./Ms. [Last name]" opening pairs with "Sincerely," "Best regards," or "Kind regards" — cover letters, first contact with someone senior, official messages. Professional-friendly: "Hi [Name]," or "Hello [Name]," — the broad middle of work email — pairs with "Best regards," "Best," or "Thanks." Casual: "Hey [Name]," or "Hi [Name]!" — colleagues and people you know well — pairs with "Cheers," "Talk soon," "Take care," or a light "Thanks!" The body sits in the same tier: contractions and short lines in the casual tier, complete and measured sentences in the formal one. Here are the three tiers as matched pairs.

One more layer makes it click: match the sign-off to the message's purpose, not just its formality. The same friendly email lands differently depending on what it is doing. Asking a favor? Lean on a thank-you close — "Thanks" or "Many thanks" — because gratitude fits and helps. Delivering bad news or an apology? Keep the close calm and respectful — "Best regards" or a sincere "Thank you for your understanding" — never breezy. Wrapping a warm, ongoing thread? "Take care" or "Talk soon" fits the relationship. The example below shows one greeting carried cleanly through to a matching close in each tier.

How does AI Emaily pick the right sign-off for your voice and each recipient?

Here is the part nobody talks about. None of this is hard once — the hard part is doing it on every email, all day. Strangers and teammates and clients and your manager land in the same inbox, each needing a slightly different register, and you are making the greeting-tone-sign-off call dozens of times a day, mostly on autopilot. That is exactly where the default "Best," slips onto a message that wanted "Thank you," and where a warm "Cheers" lands on a stranger who reads it as flippant.

AI Emaily is an AI-native email client built to take that decision off your plate. It learns your writing voice from the emails you have actually sent — your real defaults, your warmth, the closings you genuinely use — and when it drafts a reply, it matches the tone and the sign-off to the specific person you are writing to. A first email to a new client comes back with "Kind regards" or "Best regards"; a reply to a teammate you message daily comes back with the lighter "Thanks" or "Best" you would have used anyway; a thank-you to someone who just helped you closes with genuine gratitude. The whole email arrives consistent — greeting, body, and sign-off in one register — so you are reviewing and sending, not stalling on the last line.

It also keeps your sign-off and signature coherent. You set how you want to close, and it stays consistent across your mail instead of drifting between "Best," "Thanks," and whatever you typed last — and it quietly retires the things this guide warns against, like a stray "Sent from my iPhone" or an over-casual close on a serious thread. It works across every email account you connect — Gmail, Outlook, and any IMAP provider — in one place, so the voice is the same wherever you write. And it is private by design: your mail is yours, used to draft for you, not to train models for anyone else.

You stay in control the whole time. In its default Copilot mode, AI Emaily drafts the reply with the right tone and sign-off and waits — nothing sends until you approve it, so you can tweak the close or the wording before it goes. You can start free at app.aiemaily.com/signup: the Free plan is $0 and connects your inbox with AI drafting, and Pro is $17.99/month billed annually when you want it across everything you send. The point is not that a machine writes your goodbyes — it is that the right sign-off lands without you stopping to choose it, on every email.

The bottom line on email sign-offs

The sign-off is the last impression your email leaves, and it does more work than its size suggests — it sets the closing tone, signals how close you are to the reader, and ends the message on the right note. You do not need to memorize a hundred closings to get it right; you need a default and a sense of the scale. The default is "Best regards" — formal enough for anyone, friendly enough for a colleague, wrong almost nowhere.

From there, adjust to fit. Go formal — "Sincerely," "Kind regards" — for strangers, seniors, and official messages. Go warm — "Best," "Thanks," "Take care" — for colleagues and people you know. Reach for a genuine thank-you when you are asking a favor, because gratitude both fits and, the data shows, earns more replies. Skip the closings that read lazy or out of place — no sign-off, "Thx," "xoxo," a desk-bound "Sent from my iPhone." And keep the greeting, the body, and the sign-off in the same register so the whole email sounds like one person.

Do that consistently and the last line stops being a thing you stall on. If you would rather not make the call on every message, that is exactly what AI Emaily handles — matching the sign-off to your voice and to each recipient, so the right close lands automatically while you keep final say. Either way, the principle holds: end on the note the relationship calls for, and never end on nothing.