To end an email, close with three parts in order: a one-line wrap-up that states the next step, a sign-off phrase that matches your relationship with the reader, and your full name with title and contact details. Use "Best regards" or "Sincerely" for formal messages, "Best" or "Thanks" for everyday professional ones, and a question-based CTA for cold outreach.
People obsess over subject lines and opening hooks, then waste the last line of the email. That is a mistake. The closing is the part the reader sees right before they decide what to do next: reply, ignore, archive, or report as spam. A weak ending leaks all the goodwill the rest of your message built.
This is the pillar guide for every variation of the question: how to end an email professionally, the right sign-off for a formal versus casual message, the best closing lines, and what never to write. Skip to the big sign-off list if you just need a phrase to copy.
How do you end an email professionally?
End a professional email by restating the next step in one sentence, then signing off with a phrase that matches how well you know the person. For most work emails, "Best regards" or "Kind regards" is safe and warm enough. The closing line matters more than the sign-off word itself: "Let me know if Thursday works" is stronger than any clever valediction stuck on top of a vague request.
The structure is always the same:
- Closing line. One sentence that tells the reader exactly what happens next. "I will send the deck by Friday." "Happy to jump on a quick call if that is easier."
- Sign-off phrase. "Best regards," "Thanks," "Sincerely," followed by a comma.
- Signature. Full name, job title, company, and one contact method. Phone number optional, but a clean signature signals you are a real person, not a bot.
Tone is the variable. The same person should not close a message to a new prospect the way they close one to a teammate they have known for years. Match the formality of the reader's last message if you have one to go on.
Formal vs casual: which sign-off fits?
The single biggest decision is formality. Get it wrong and you either sound stiff to a friendly contact or sloppy to someone who expects polish. Here is the quick rule.
- Formal for first contact with senior people, legal or financial matters, job applications, and anything that may be forwarded or filed: "Sincerely", "Respectfully", "Best regards".
- Professional but warm for day-to-day work with colleagues, clients, and prospects you have already spoken to: "Best", "Thanks", "Kind regards", "Looking forward".
- Casual only for people you genuinely know well: "Cheers", "Talk soon", "Take care".
One nuance: research on email closings consistently finds that gratitude beats formality for getting a reply. In Boomerang's analysis of 350,000+ threads, "thanks in advance" closed at a 65.7% response rate and "thanks" at 63.0%, while "best regards" managed 52.9% and "best" trailed the popular sign-offs at 51.2%. That is a 14-point gap between the warmest and the coolest common close. It does not mean you spam every email with "thanks", but when you are asking for something, a closing line that expresses appreciation pulls more responses than a cold "regards".
45+ email sign-offs grouped by context
Here is the full reference. Pick the column that matches your situation, then match the sign-off to the relationship. The "best for" column tells you when each one lands.
| Sign-off | Context | Best for |
|---|---|---|
| Sincerely | Formal | Job applications, cover letters, first contact with executives |
| Sincerely yours | Formal | Very formal letters, legal correspondence |
| Respectfully | Formal | Writing to someone senior or in authority |
| Yours faithfully | Formal | UK formal letters where you do not know the recipient's name |
| Yours sincerely | Formal | UK formal letters when you know the recipient's name |
| With appreciation | Formal | Thanking someone for significant help or a referral |
| With gratitude | Formal | Formal thank-you notes after an interview or favour |
| Best regards | Professional | The default for almost any work email |
| Kind regards | Professional | Polite, slightly warmer than "best regards" |
| Warm regards | Professional | Established contacts you have a friendly rapport with |
| Best | Professional | Everyday emails to colleagues and known contacts |
| All the best | Professional | Wrapping up a project or wishing someone well |
| Thanks | Professional | When the reader has done or will do something for you |
| Thank you | Professional | Slightly more formal gratitude than "thanks" |
| Many thanks | Professional | Acknowledging real effort from the recipient |
| Thanks again | Professional | Following up after someone already helped you |
| Regards | Professional | Neutral, safe, slightly cooler than "best regards" |
| Looking forward | Professional | When you expect a reply or a scheduled next step |
| Looking forward to hearing from you | Professional | Nudging a reply without pressure |
| Speak soon | Friendly | Contacts you talk to regularly |
| Talk soon | Friendly | Warm, conversational close to a known contact |
| Take care | Friendly | Friendly sign-off with a personal touch |
| Cheers | Friendly | Casual work cultures, UK/AU contacts, peers |
| Have a great day | Friendly | Light, positive close to a routine email |
| Have a great weekend | Friendly | Sending on a Friday afternoon |
| Until next time | Friendly | Recurring contacts and newsletters |
| Warmly | Friendly | Personal, warm relationships in a professional setting |
| Stay in touch | Friendly | Closing a thread but keeping the door open |
| Just following up | Follow-up | A second touch on a thread that went quiet |
| Circling back on this | Follow-up | Re-surfacing a previous request |
| Any thoughts on the below? | Follow-up | Prompting a decision after a proposal |
| Should I close the loop on this? | Follow-up | A polite final nudge before you stop chasing |
| Happy to resend if this got buried | Follow-up | Giving a busy reader an easy out |
| Let me know if now is not the right time | Follow-up | Permission-based close that lowers pressure |
| Worth a quick chat? | Cold outreach | Low-commitment CTA that invites a yes/no reply |
| Open to a 15-minute call next week? | Cold outreach | Specific, time-boxed ask |
| Is this a priority for your team right now? | Cold outreach | Qualifying question that earns context-rich replies |
| Would it help if I sent a short example? | Cold outreach | Offering value instead of demanding a meeting |
| Who owns this at {{company}} these days? | Cold outreach | Routing to the right person when unsure of the contact |
| Mind if I send one idea over? | Cold outreach | Tiny ask that is easy to say yes to |
| Should I follow up next quarter instead? | Cold outreach | Breakup-adjacent close that often revives dead threads |
| Reply "no" and I will stop reaching out | Cold outreach | Final breakup email that respects the reader's time |
| Thanks for reading this far | Cold outreach | Disarming, human close on a longer message |
| Happy to be told this is not relevant | Cold outreach | Humble close that lowers defensiveness |
| Appreciate your time either way | Cold outreach | Gracious close regardless of the answer |
| Looking forward to your thoughts | Cold outreach | Confident close after a clear value pitch |
| Best, and no pressure at all | Cold outreach | Softening a direct ask on a first email |
How should you end a cold outreach email?
Cold email is its own discipline. The reader does not know you, owes you nothing, and decides in two seconds whether to reply. Your close is where you either earn a reply or get archived. The rule: end with a question, not a statement.
A statement close like "Let me know if you are interested" puts all the work on the reader. A question close like "Worth a quick chat next week?" gives them a low-effort decision: yes or no. The lighter the ask, the higher the reply rate. Asking for a 15-minute call converts better than asking for a 30-minute demo, and asking "is this a priority right now?" often beats both because it invites context instead of a commitment.
The bar for cold email is far lower than for warm replies, which is exactly why the close has to earn its keep. Backlinko's analysis of 12 million outreach emails found an average reply rate of just 8.5%, and that a single follow-up touch lifted replies by 65.8% over a one-and-done send. Two takeaways for your close: make the ask small enough to clear that 8.5% bar, and never treat the first email as the only shot. The closing question is what keeps the thread open for the follow-up that does most of the lifting.
This is also where a strong closer compounds at scale. When you are sending sequences rather than one-off emails, the CTA line is the single highest-leverage thing you can A/B test, and the difference between a soft question close and a pushy demand close shows up directly in reply rate. Outbound platforms like Overloop let you test closing lines across a sequence and see which CTA pulls the most responses before you scale the winner. The point is not the tool; it is that the closer is testable, so treat it like the variable that matters most.
What should you avoid when ending an email?
Some closings actively cost you replies. Here is what to drop and what to do instead.
| Don't | Do instead |
|---|---|
| Leave "Sent from my iPhone" in by accident | Use a clean, polished signature for anything that matters |
| Pile on exclamation points ("Thanks!!!") | Keep it to one, or none; calm reads as confident, not anxious |
| Demand a "prompt reply" from a stranger | Make a low-pressure ask and let the next-step line do the nudging |
| Use religious or seasonal sign-offs at work ("Blessings") | Stick to a neutral professional close that no reader can object to |
| End with a vague "Let me know your thoughts" | Name the exact next action: a date, a question, a single decision |
| Bury your name under a wall of legal disclaimers | Lead with name, role, and one contact method; trim the boilerplate |
One more: do not open with a tired line either. The same energy you put into a clean close should go into the rest of the message. We catalogued the worst offenders in 17 sentences to never use in a sales email, and most of them live near the start or the end.
Email ending examples by situation
Here is how the three-part close looks in practice across common situations.
Formal email to someone senior
I have attached the signed agreement and will follow up once your team confirms receipt.
Best regards,
Jordan Lee
Head of Partnerships, Acme Co
jordan@acme.co
Everyday email to a colleague
I will have the draft in your inbox by Thursday. Shout if you need it sooner.
Thanks,
Sam
Follow-up on a quiet thread
Circling back on the proposal from last week. Happy to resend if it got buried, or should I follow up next month instead?
Best,
Priya
Cold outreach to a new prospect
If reducing manual follow-ups is on your radar this quarter, worth a quick 15-minute call next week to compare notes?
Appreciate your time either way,
Alex Rivera
Founder, Outbound Labs
How to end an email to a professor or recruiter
Stay formal and specific. For a professor, close with the action you need ("I would be grateful for your feedback on the attached draft by next week") then sign off with "Sincerely" or "Best regards" and your full name plus your student or course ID. For a recruiter, restate your interest and availability ("I am available for a call any afternoon this week") and close with "Best regards" or "Kind regards". Skip "Cheers" and "Thanks!!!" in both cases; these readers file and forward your message, so polish counts.
Formal letter vs email closings (UK vs US: Yours sincerely / faithfully)
In UK convention, the closing depends on whether you know the recipient's name. Use "Yours sincerely" when you opened with their name ("Dear Ms Patel"), and "Yours faithfully" when you opened with "Dear Sir or Madam" and do not know who will read it. US convention drops this distinction and uses "Sincerely" or "Sincerely yours" in both cases. For everyday email on either side of the Atlantic, "Best regards" is the safe default and sidesteps the whole rule.
How to end an email when you don't know the recipient's name
If you opened with "Dear Sir or Madam" or "To whom it may concern", close with "Yours faithfully" in UK style or "Sincerely" in US style. In a cold outreach context where you are unsure who owns the topic, skip the formal letter rules and use a routing question instead: "Who owns this at your team these days?" That turns a missing name into a useful reply rather than a dead end.
Notice the pattern: every close names the next step before the sign-off. The valediction is the smallest part. For the subject line that gets these opened in the first place, see our guide to the best subject lines for sales emails, and for the full message structure, the best sales email template.
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