Read time: 11 min | Last updated: February 2026
The Short Answer
End every email with two things: a closing line that tells the reader what happens next, and a sign-off that matches your relationship with them. The closing line matters more than the sign-off. "Let me know if Tuesday works" followed by "Best" will always outperform "Warmest regards" after a vague paragraph that trails off.
The rest of this guide covers how to get both parts right across different situations, from cold outreach to client updates to internal threads where you just need someone to approve something.
Why Email Endings Matter More Than You Think
Most advice about email endings focuses on the sign-off: which two words to put before your name. That's the least important part. What actually shapes how people respond is the closing line, the last sentence of your message body before you sign off.
A weak ending creates ambiguity. The reader finishes your email and thinks: "So... what do I do with this?" They might respond, they might not. A strong ending removes that ambiguity entirely. It tells the reader exactly what you need and when you need it.
Research backs this up. Boomerang's analysis of over 350,000 email threads found that emails ending with a clear call to action or expression of gratitude received significantly higher response rates than those that simply trailed off. Emails closing with "Thanks in advance" saw a 65.7% response rate. Emails with no intentional closing? 51.2%.
The sign-off itself is social glue. It signals warmth, formality, or neutrality. Get it obviously wrong (signing "Love" to a client) and it's memorable for the wrong reasons. But between "Best" and "Best regards" and "Thanks"? Nobody is analyzing the difference. Spend your energy on the closing line instead.
The Anatomy of an Email Ending
A complete email ending has three components. Most people only think about one of them.
1. The Closing Line
This is the final sentence of your message body. It should do one of three things:
Request a specific action: "Could you review the attached and flag anything that needs revision by Thursday?"
Confirm next steps: "I'll send the updated deck by end of day tomorrow."
Express genuine appreciation: "Thanks for handling this on short notice. I know the timeline was tight."
Notice that each of these gives the reader clarity. They know what's expected after reading it. Compare that to how most emails end: "Let me know if you have any questions." That sentence has become so reflexive it's essentially meaningless. People write it when they have nothing else to say. Readers skip over it because they've seen it a thousand times.
If you genuinely want questions, be specific: "Let me know if the pricing on page 3 looks right." If you don't expect questions, don't invite them. Close with the actual point of your email instead.
2. The Sign-Off
The word or phrase before your name. This guide covers specific options below, but the general principle is: pick one that feels natural for the relationship and stop thinking about it. Consistency is better than optimization. If you're someone who writes "Best" on every email, that's fine. It's neutral, professional, and nobody has ever lost a deal because they wrote "Best" instead of "Kind regards."
3. The Signature Block
Your name, title, company, and contact information. Keep it clean. A signature with six social media icons, a legal disclaimer, an inspirational quote, and a banner image says "I didn't set this up, IT did." If you control your own signature, include your name, role, company, and one contact method beyond email (usually phone). That's it.
Professional Sign-Offs That Actually Work
Rather than listing 100 options, here are the ones that professionals consistently use, organized by when they make sense.
The Safe Defaults
These work in virtually any professional context. Use them when you don't want the sign-off to carry any particular signal.
Best regards — The universal default. Works for clients, executives, vendors, strangers. Some people find it stiff, but nobody finds it inappropriate. If you only memorize one sign-off, this is it.
Best — The shorter version. Equally professional, slightly more modern. Common in tech, consulting, and any industry where email volume is high and brevity is valued.
Thanks — Works when there's even a slight reason to express gratitude, which covers most professional emails. You're thanking them for their time, their response, their help. It's warm without being personal.
Thank you — Slightly more formal than "Thanks." Better for first-contact emails or when you're making a request.
When You Want Warmth
These signal friendliness beyond standard professionalism. Use them with people you've built some rapport with.
Warm regards — The warm version of "Best regards." Good for clients you've worked with for months, mentors, or collaborators you genuinely like working with. Avoid it in first emails to strangers; it reads as presumptuous before you've established a relationship.
All the best — Genuine well-wishing. Works at the end of longer exchanges, project wrap-ups, or when someone's heading into something significant (a presentation, a launch, a vacation). It feels personal without being intimate.
Take care — Conversational and human. Appropriate for colleagues you're friendly with, especially when the email is the last in a thread. It says "we're done here, and I wish you well." Doesn't work in formal contexts.
Cheers — Common in British, Australian, and increasingly in American professional contexts. Carries an easygoing energy. Works well in creative industries, startups, and with international teams. Can feel out of place in highly formal industries like law or finance.
When Formality Matters
Reserve these for situations where the professional stakes are elevated.
Sincerely — The most formal standard sign-off. Appropriate for cover letters, official correspondence, legal communications, and emails to people with significant seniority whom you don't know personally. It signals respect for institutional formality.
Respectfully — A step beyond "Sincerely." Used in government, military, and academic contexts where hierarchy is acknowledged. If you're writing to a senator, a general, or a university chancellor, this fits. In most business contexts, it reads as overly deferential.
Regards — Formal but not stiff. Sits between "Best regards" (warmer) and "Sincerely" (more formal). Some people read it as cold when used alone; adding "Kind" or "Best" before it softens the tone.
When You're Following Up on Action Items
Thanks in advance — Effective when you're asking someone to do something and want to signal that you're confident they'll do it. The implied gratitude creates subtle social pressure to follow through. Use it when the ask is reasonable. Avoid it when the other person hasn't agreed to anything yet; then it reads as presumptuous.
Looking forward to hearing from you — Explicitly signals that you expect a reply. Useful in sales outreach, job applications, or any context where the conversation needs to continue. Can feel pushy in casual exchanges.
Talk soon — Conversational. Works when you have a call or meeting scheduled, or when you're in regular contact with someone. Not appropriate for first emails to strangers.
Sign-Offs to Avoid in Professional Contexts
Yours truly / Yours faithfully — Archaic. These belong in handwritten letters, not business email. They'll make you sound like you're writing from 1987.
Sent from my iPhone — Not technically a sign-off, but many people let it serve as one. It signals "I couldn't be bothered to write a proper ending." Remove or customize the default.
Thx — Abbreviations in sign-offs read as dismissive. You're saving two characters at the cost of looking like you don't care enough to spell "thanks."
xo / xx — Unless you're emailing a close friend, no.
No sign-off at all — Abruptly ending an email after your last sentence can work in rapid-fire internal threads where you're trading three-line messages. In any other context, it reads as curt or thoughtless.
Closing Lines for Common Situations
The sign-off matters less than the closing line. Here are strong closings for situations you'll encounter regularly.
Making a Request
Weak: "Let me know your thoughts." Strong: "Could you send me the revised numbers by end of day Friday?"
Weak: "Any feedback would be appreciated." Strong: "I'd find it helpful to know whether the timeline on page 2 is realistic from your team's perspective."
The pattern: be specific about what you need and when you need it. Vague requests get vague responses, or no response at all.
Delivering Information
Weak: "Hope this helps!" Strong: "The updated report is attached. The key changes are on pages 4 and 7. Let me know if anything looks off before I send it to the client."
Weak: "Just wanted to share this with you." Strong: "Sharing this for context ahead of Thursday's meeting. No action needed on your end."
The pattern: tell the reader what to do with the information you've given them. Should they review it? Ignore it? Forward it?
Following Up
Weak: "Just bumping this to the top of your inbox." Strong: "Circling back on the vendor proposal from last week. Are you leaning toward Option A or B? Happy to set up a quick call if it's easier to discuss live."
Weak: "Per my last email..." Strong: "I know this week has been packed. When you get a chance, I'd appreciate your sign-off on the budget so we can lock in the venue."
The pattern: acknowledge the delay without being passive-aggressive, then restate what you need.
Ending a Thread
Weak: "Sounds good!" Strong: "Great, I'll book the venue for March 14 and send calendar invites this afternoon. Thanks for pulling this together."
The pattern: confirm what was decided and who's doing what next. This prevents the follow-up email asking "wait, so are we doing this?"
Delivering Bad News
Weak: "Sorry for any inconvenience." Strong: "I understand this changes your timeline, and I'm sorry about that. I've outlined two alternative approaches below. I'm available tomorrow morning if you'd like to talk through them."
The pattern: acknowledge the impact, then offer a path forward. Don't minimize with corporate hedging ("any inconvenience") and don't leave them without options.
Cold Outreach
Weak: "Would love to chat sometime." Strong: "If this sounds relevant, I'm free Tuesday or Thursday afternoon for a 15-minute call. No pressure either way."
The pattern: make the next step low-friction and no-obligation. Give specific times. Explicitly remove pressure.
How Sign-Offs Change Across an Email Thread
One thing most guides miss: your sign-off should evolve as the conversation progresses.
First email in a thread: Full sign-off, full name. "Best regards, Sarah Chen." You're establishing the professional baseline.
Second or third reply: Shorter sign-off, first name only. "Thanks, Sarah." The relationship has been established. Continuing to write "Best regards, Sarah Chen, Director of Marketing, Acme Corp" in your fifth reply to the same person is the email equivalent of re-introducing yourself at a party.
Deep into a thread (5+ replies): Sign-off becomes optional. Quick replies like "Works for me" or "Confirmed, thanks" don't need a formal ending. The conversation has shifted to real-time back-and-forth. Adding "Kind regards" to a one-line confirmation feels performative.
Resuming after a gap: Reset to a warmer sign-off. If it's been weeks since the last message, don't pick up with a bare-bones reply. Re-establish warmth with "Hope you're doing well" and close with a proper sign-off.
A note on auto-signatures: Most professionals have an automatic signature block appended to every email. This doesn't change with the thread, nor should it. What evolves is the closing line and the sign-off text above the signature. Your auto-signature handles the contact information consistently; you (or your AI assistant) handle the human part, the closing line that wraps up the conversation and the sign-off that sets the tone. If your email client appends a full signature to every reply, consider setting a shorter reply signature so it doesn't dominate brief responses deep in a thread.
This isn't a rigid rule. It's about reading the social dynamics of the conversation. Match the energy of the thread.
Platform-Specific Tips
Gmail
Gmail lets you create multiple signatures under Settings > General > Signature. Set up two: a full signature for new emails (name, title, phone) and a minimal one for replies (just your name). Gmail can automatically switch between them based on whether you're composing or replying.
Outlook
Outlook separates signatures for "new messages" and "replies/forwards" under File > Options > Mail > Signatures. Use this to avoid the redundant full signature in every reply. The desktop, web, and mobile versions all support this distinction.
Apple Mail
On Mac, go to Mail > Settings > Signatures. You can create multiple signatures and assign different ones to different email accounts. On iPhone, Settings > Mail > Signature lets you set per-account signatures.
Ayari
Ayari handles sign-offs and closing lines automatically based on context. Tell Ayari "reply to this and schedule a follow-up for Thursday" and it generates the full message, including an appropriate closing line and sign-off, calibrated to the formality of the thread. You review and edit before sending.
What makes this work well: Ayari learns from how you already reply to specific senders. If you always sign off with "Cheers" to your design team but "Best regards" to clients, it picks up on that pattern. For new senders or unfamiliar contexts, it generates context-aware closings based on the tone and formality of the thread.
You can also set up personal signatures in Ayari, so your name, title, and contact details are appended consistently without you thinking about it. The combination of a smart closing line, an appropriate sign-off, and a clean signature block means the entire ending of your email is handled, which is particularly useful on high-volume days when crafting individual closings for 40 emails isn't realistic.
International Considerations
Email endings carry cultural weight that's easy to miss if you only email within your own country.
German-speaking countries: Formal correspondence uses "Mit freundlichen Grüßen" (With friendly regards). Shortening it to "MfG" in business email is considered dismissive. The formality level of your closing signals respect.
Japan: Email closings are highly structured. "よろしくお願いいたします" (yoroshiku onegai itashimasu) roughly means "I humbly ask for your favorable consideration" and appears in nearly every professional email. Omitting it would be noticeably rude.
France: "Cordialement" (Cordially) is the standard professional close. More formal options exist but are reserved for specific hierarchical contexts. French email culture values politeness formulas that English speakers often find elaborate.
Latin America: Professional warmth is expected. "Un abrazo" (a hug) is common among colleagues who've met in person, even in business contexts. English speakers might find this overly familiar, but it's standard professional courtesy in many Latin American countries.
Nordic countries: Informality is the norm. First names and casual sign-offs appear even in emails to senior executives. Writing "Respectfully" to a Swedish CEO would feel strangely formal.
The general principle: when emailing internationally, err slightly more formal than you think necessary. You can always warm up in subsequent messages once you've gauged the other person's style.
Common Mistakes
Using the same closing line on every email. "Let me know if you have any questions" has become white noise. Readers skim past it. If you catch yourself defaulting to it, replace it with something specific to the conversation.
Mismatching tone between body and sign-off. A direct, no-nonsense email that ends with "Warmest regards and blessings" creates cognitive dissonance. Your ending should feel like a natural extension of everything above it.
Apologizing in the closing for no reason. "Sorry for the long email" and "Sorry to bother you" undermine your message. If the email needed to be long, it needed to be long. If your request is legitimate, don't preemptively apologize for making it.
Sign-off inflation. "Best" becomes "Best regards" becomes "Warmest regards" becomes "With warmest regards and appreciation." More words don't mean more professionalism. They mean you're overthinking it.
Forgetting that the sign-off is the last impression. In a brief email, the closing line and sign-off might make up 30% of the total text. A thoughtful ending to a two-paragraph email can elevate the entire message.
Frequently Asked Questions
Is "Best" too informal for professional email?
No. "Best" is used by professionals at every level across most industries. It's brief, neutral, and appropriate for everything from client correspondence to internal updates. The only contexts where you might want something more formal are legal communications, government correspondence, or emails to very senior people you've never met.
Should I match the other person's sign-off?
It's a reasonable instinct but not a rule. If a client signs off with "Cheers," you don't need to mirror it. Just stay in the same general register. If they're casual, don't be stiff. If they're formal, don't write "Later!" Matching energy matters more than matching specific words.
Is it okay to skip the sign-off entirely?
In rapid-fire back-and-forth threads, yes. If you're exchanging one-line messages about a time or a number, adding a sign-off every time creates unnecessary bulk. In standalone emails or the first message of a thread, always include one.
What about email signatures with quotes or images?
Keep your signature functional. Inspirational quotes are personal branding that most recipients don't care about. Banner images increase email size and sometimes trigger spam filters. Logo images can be useful for brand recognition but shouldn't dominate. Clean and simple wins.
How do I end a difficult or confrontational email?
Focus the closing line on the path forward, not the disagreement. "I'd like to find a solution that works for both sides. Can we schedule 20 minutes this week to discuss?" This signals resolution without conceding your position. Avoid sign-offs that drip with sarcasm or formality designed to create distance.
Does my email sign-off affect deliverability?
Not directly. Spam filters don't penalize specific sign-off phrases. However, heavy HTML signatures with multiple images, links, and formatting can trigger spam filters, especially in cold outreach. Keep signatures lightweight, particularly in first emails to new contacts.
Conclusion
Ending an email well comes down to two things: clarity and calibration. Clarity means your closing line tells the reader what happens next. Calibration means your sign-off matches the relationship and context.
Don't overthink the sign-off. Put real thought into the closing line. If every email you send ends with a specific, actionable final sentence, you'll get faster responses, fewer misunderstandings, and a reputation as someone who communicates clearly.
For the sign-off itself, pick a comfortable default and use it. "Best," "Thanks," "Best regards." Any of these will serve you well in 95% of professional situations. Save the deliberation for the rare cases where formality, warmth, or cultural context genuinely requires it.
If managing email closings across dozens of daily messages feels like overhead, AI email tools that connect to your inbox can draft contextually appropriate endings while you focus on the substance of your communication. But the principles here apply whether you're writing manually or reviewing AI-generated drafts: end with clarity, match the tone, and move on to the next thing.
Related Reading
- Email Etiquette: 15 Rules That Actually Matter — the closing is rule 15; here are the other fourteen
- How to Organize Your Email Inbox — a framework for building a system that actually sticks
- Email Triage: A Practical Guide — methods for processing email faster so you can spend your energy on the message, not the mechanics
- Email Overload: How to Fix It — if volume is the real problem behind your inbox stress