A business thank-you note is a short, signed message to one person about one specific thing: an order, a signed contract, a referral, a year of good work, a gift. Send it the same week. Greet them by name, say thank you, add one detail only you would know, look ahead in one line, and sign as a person. Ask for nothing. Four or five sentences are enough.
This guide is the starting point for our business thank-you advice: who to thank and when, what to write, card or letter or email, how soon to send, how to keep going as you grow, and the mistakes to avoid. Each section links to a longer guide with more examples.
Who should a business thank, and when?
Thank the six groups that keep the business running: customers, clients, referrers, staff, vendors and donors. The best moment is right after they did something for you: a first order, a signed contract, an introduction, a finished project, a rush delivery, a gift. Do not wait for the holidays. A note tied to a real moment reads as thanks. A note tied to the calendar reads as marketing.
| Who | Thank them when | More examples |
|---|---|---|
| Customers | After a first order, a big order, or a year of buying | Small business thank-you messages to customers |
| Clients | When the contract is signed, and when the work is done | Thank-you note to a client after closing a deal |
| Referrers | The week they send someone, even if it does not become work | Referral thank-you notes |
| Staff | After a hard project, and on the date they joined | Employee appreciation notes |
| Vendors and partners | After a rush job, a favor, or a good year together | Business thank-you letter examples |
| Donors | After a first gift, and again when you can show what it did | Handwritten donor thank-you notes |
Customers
Customers come first because keeping one costs far less than finding one. Writing in Harvard Business Review, Amy Gallo reports that winning a new customer is anywhere from five to 25 times more expensive than keeping an existing one. She also cites research by Frederick Reichheld of Bain and Company: raising customer retention by 5 per cent raises profits by 25 to 95 per cent (HBR).
Those figures are about retention in general, not about notes. But a note is one of the cheapest things you can do for someone who has already bought.
Good moments are the first order, a big order, and a year as a customer. Wording for each is in small business thank-you messages to customers and in our thirty notes for thanking people who support a small business. Online shops should read post-purchase thank-you cards. There are also guides for retail shops, restaurants and hotels.
Clients
A client is a customer you work with over time, so there are two moments. The first is when they sign: they have just taken a risk on you, and a note says you noticed. The second is when the work is done and you can name what went well.
The first moment has its own guide, what to write to a client after closing a deal. For the rest of the relationship, see handwritten notes in sales, which runs from the first meeting to renewal. Trade guides cover software companies, real estate agents, financial advisors, insurance agents and contractors.
Referrers
People who send you work are worth more than most businesses treat them. In Nielsen's 2021 Trust in Advertising Study of more than 40,000 consumers, 88 per cent said they trust recommendations from people they know more than any other channel (Nielsen).
Referred customers also stay. A study of 10,000 customers of a German bank, published in the Journal of Marketing in 2011, found that referred customers were about 18 per cent more likely to stay with the bank. Their long-term value was 16 to 25 per cent higher (Knowledge at Wharton). That is one bank, not every business.
Thank the referrer when the introduction happens, not when the invoice is paid. You are thanking them for their trust, and that was given the day they made the call. Our referral thank-you notes were written for accountants and lawyers, and they work for any trade.
Staff
Most employees feel under-thanked. Gallup found in 2024 that just 22 per cent of employees say they get the right amount of recognition for their work. Gallup also followed nearly 3,500 employees from 2022 to 2024. Those who were well recognized were 45 per cent less likely to have left after two years (Gallup).
A note to an employee follows the same rule as a note to a customer: name what they did and what it led to. See employee appreciation notes, work anniversary messages and welcome cards for new hires.
Vendors and partners
This is the group most businesses forget. The printer who rushed your order and the bookkeeper who caught an error are paid, so nobody thinks to thank them. A note from you may be the only one they get all year.
Thank a vendor after a rush job or a favor, and at the end of a good year. A longer thanks to a partner often suits a letter, and our business thank-you letter examples cover those.
Donors
For a nonprofit, the thank-you is the first step toward the next gift. Send a note after a first gift, and again later when you can show what the money did. The card does not replace the receipt a donor needs for their taxes, so send both. Our handwritten donor thank-you notes cover first gifts, monthly donors and volunteers.
What should a business thank-you note say?
Five things, in this order: their name, thank you for one named thing, one detail only you would know, a line that looks ahead, and a closing with your own name. That is four or five sentences. The detail matters most. It proves a person wrote the note, and it is the line the reader remembers.
- Greeting, with their name. "Dear Mr Alvarez," or "Hi Hannah," depending on how you would greet them in person. Check the spelling. Never "Dear Customer."
- Thank you, for one named thing. "Thank you for choosing us to fit your new shop front." Not "Thank you for your business."
- One detail only you would know. "The green you picked looks even better on the street than on the sample." This is the heart of the note.
- A line that looks ahead. "I will call in next month to check the door closer." A visit, a call or a next step. Not an offer.
- Closing, your name, your business. "With thanks, Rosa Marin, Marin Glass." A person signs, then the business.
Where does the detail come from? You already have it: what they ordered, a question they asked on the call, what went well on the job, or what their gift made possible.
Do not worry about fine wording. In experiments by Amit Kumar and Nicholas Epley, people who wrote letters of thanks overestimated how awkward the reader would feel, and underestimated how surprised and positive the reader would feel. "It only takes a couple of minutes to compose letters like these, thoughtful ones and sincere ones," Kumar said. "It comes at little cost, but the benefits are larger than people expect" (UT News).
For the last two lines, our guide on how to sign off a thank you card has closings for clients and customers, and shows how to sign for a team.
Should it be a card, a letter or an email?
Use a card for most business thanks. It is short, personal and physical. Use a letter when the thanks needs detail or a formal record, such as the end of a long project. Use email when speed matters most or the favor was small. For the moments that matter, send the email today and mail a card as well.
The trouble with email is the pile it lands in. Microsoft's Work Trend Index, built from Microsoft 365 usage data, found in 2025 that the average worker receives 117 emails a day, and most are skimmed in under 60 seconds (Microsoft). Your thank-you gets the same glance as everything else.
A card does not sit in that pile. The Greeting Card Association reports that 60 per cent of people say receiving cards and letters in the mail "means more to me" than an email (GCA). The association speaks for card makers, so read that as a signal, not as proof.
A letter earns its place when the thanks is long, as with a funder or a client at the end of a big project. For those, start with our business thank-you letter examples.
Handwritten or printed?
Write by hand whenever the note carries a person's name. Print is fine for the picture on the front and the return address. What backfires is a printed font dressed up as handwriting, because readers can check. Our guide to handwritten notes vs handwriting fonts shows how they tell.
What the research does and does not say about mail is in our handwritten mail statistics: read rates, response rates, and two trials in which a handwritten request got about twice the replies.
How soon should you send a business thank-you note?
Send it the same week, while the order, meeting or favor is still fresh in their mind. An email can go the same day. A card should be in the mail within a few days. If you are late, send it anyway and say so in one line. What does not work is thanks that turns up months later, with no link to the moment.
The clearest evidence comes from fundraising. Anya Samek and Chuck Longfield ran an experiment with 67 public television stations and roughly 500,000 donors, in which some donors got a thank-you phone call. The calls had no effect on later giving. The summary we read gives no reason, but one detail stands out: callers reached donors five to seven months after the gift (American Economic Association).
Compare that with thanks that comes early. Bloomerang, a maker of donor software, looked at 3,729 nonprofits and their 1,915,939 donors, starting from each first gift. Donors who got no call within 90 days gave again about 33 per cent of the time. With one call in that window, the figure was 41.24 per cent. With more than one, 58.21 per cent (Bloomerang).
Read both with care. They are about phone calls to donors, not notes to customers, and the Bloomerang figures are not from an experiment, so nonprofits that call quickly may simply be better run. Together they suggest that thanks works best close to the moment.
If you have missed the moment, do not skip the note. Hallmark's rule of thumb for events is to send cards within a month, and after that to open with a brief apology, such as "I've been meaning to tell you..." (Hallmark). One honest line, then the thanks.
How many thank-you notes should a business send?
Send as many as you can make specific. For a new business, that is every customer. As you grow, pick the moments that matter most, such as first orders, signed contracts and referrals, and thank every person who reaches one. A rule tied to a moment beats a quota. Nobody is missed, and nobody gets a note for no reason.
Most businesses move through three stages.
Stage one: by hand, every time
While you still know every customer, write every note yourself. Keep cards, envelopes and stamps where you pack orders or sign contracts. Write the note before you close the job. You will never again know your customers this well, so use it.
Stage two: a weekly habit
When notes start to slip, give them a fixed slot each week. Pull the list from your orders, your calendar or your CRM: new customers, signed deals, referrals, and anyone on your team who went beyond their job. Use the five parts above and change only the detail. Ask the person who knows the customer best for that one line.
A weekly slot also spreads the thanks through the year. A stack of cards in December is a holiday greeting, a different thing, covered in business holiday card messages.
Stage three: triggered from your shop or CRM
At some point there are more moments than hours. This is when a note should start from the event itself: a paid order, a deal marked as won, a date in a spreadsheet.
That is the job MailMyCard was built for. A pen writes your message on a card, and we mail it. You can connect Shopify, WooCommerce or Stripe so that every paid order gets a card at its shipping address. HubSpot, Pipedrive, Zoho CRM, Attio, monday.com, Keap and Close connect too, so the contact gets a card when a deal is won. Zapier, Make, n8n and the API cover other moments, and a Google Sheet or a CSV works for a one-off list.
One honest point: the pen is real, but a machine holds it, so do not tell a customer you wrote the card with your own hand.
Sign-up is by invitation at the moment. The For business page has the details, and the developer docs show each connection. We also have step-by-step guides for Shopify and HubSpot, and a comparison of handwritten card services if you are still choosing.
Whatever tool you use, keep the detail. A triggered note should still name what the person bought or did. And test it: send cards to half of a group, nothing to the other half, and compare repeat orders. The statistics guide describes how.
What mistakes should you avoid in a business thank-you note?
The big ones are a note with no detail, a note that sells, and a note signed by nobody. Each one turns thanks into marketing, and readers can tell at once. The rest are smaller: thanking only your biggest accounts, sending only in December, faking the handwriting, and using a thank-you where an apology was due.
- No detail. "Thank you for your business" could come from anyone. Add the one line that could only be about them.
- A pitch. No discount code, no "leave us a review", no "tell a friend". A thank-you that asks for something is a request.
- Signed by "The Team". A person signs. If several people worked with the client, each can add a first name.
- Only the big accounts. A small customer can become a big one, and nobody likes to feel ranked. Pick moments, not account sizes.
- Only in December. Your card arrives with everyone else's. Thank people when they act.
- Fake handwriting. A printed font that pretends to be a pen is the one format that can make things worse.
- The wrong name. Check the spelling against the order or the email signature. A wrong name undoes the whole note.
- Thanks in place of sorry. If the order was late or the job went wrong, "thank you for your patience" is not enough. Use our customer apology letter examples.
Business thank-you note examples, one for each group
One short note for each group. Every name and business is made up. Swap in your own detail, and follow the link under each for more.
To a customer, after a first order
Dear Hannah, thank you for your first order with us. I packed the walnut board myself and picked one with the dark stripe you asked about. I hope it gets plenty of use this fall. With thanks, Joel, Ridgeline Woodworks
More: small business thank-you messages to customers.
To a client, when the work is done
Dear Mr Okafor, thank you for trusting us with the warehouse lighting. Your crew cleared the aisles ahead of us every morning, and that is why we finished early. I will stop by in the spring to check the sensors. With gratitude, Lena Brandt, Brandt Electric
More: thank-you note to a client after closing a deal.
To someone who referred a customer
Dear Priya, thank you for sending Marcus Hill our way. He said you told him we always pick up the phone, and that meant a lot to hear. We met on Tuesday, and I will take good care of him. Gratefully, Sam Whitaker, Whitaker Tax
More: referral thank-you notes.
To an employee, after a hard week
Dear Luis, thank you for staying late on Thursday to run the payroll file again. You caught the overtime error before anyone was paid wrong, and you did it without being asked. I noticed. Thank you, Carol
More: employee appreciation notes.
To a vendor, after a rush job
Dear Ana, thank you for reprinting our menus so fast when the old ones had the wrong hours. We opened on Saturday with every table set. You made us look organized. With thanks, Theo Grant, Harbor Street Kitchen
More: business thank-you letter examples.
To a donor, after a first gift
Dear Mrs Castillo, thank you for your gift to the reading room. It paid for the low shelves, and the first graders can now reach every book. Come and see it any afternoon. With gratitude, Ruth Ames, Eastside Library Friends
More: handwritten donor thank-you notes.
Do business thank-you notes actually work?
Probably, and you can check for yourself. Research shows that people value thanks more than senders expect, that keeping a customer costs far less than winning one, and that recognized staff stay longer. But our statistics guide found no large study that measures handwritten business cards on their own. Be wary of anyone who promises a fixed return.
So start small. Pick one moment, such as a first order or a signed contract, and write the note for everyone who reaches it for a month. Watch what comes back, then decide how far to take it.
Sources
All checked on 5 October 2026.
- Gallo, A., "The Value of Keeping the Right Customers", Harvard Business Review, 29 October 2014, citing Frederick Reichheld of Bain and Company: hbr.org
- Nielsen, "Beyond martech: building trust with consumers and engaging where sentiment is high", on the 2021 Trust in Advertising Study: nielsen.com
- Schmitt, P., Skiera, B. and Van den Bulte, C. (2011), "Referral Programs and Customer Value", Journal of Marketing, via Knowledge at Wharton
- Yi, R., "Employee Retention Depends on Getting Recognition Right", Gallup, 18 September 2024: gallup.com
- Hallmark Ideas, How to Write a Thank You Note: ideas.hallmark.com
- Kumar, A. and Epley, N. (2018), "Undervaluing Gratitude", Psychological Science, via UT News, August 2018
- Microsoft WorkLab, Breaking down the infinite workday, Work Trend Index, 17 June 2025: microsoft.com
- Greeting Card Association, Greeting Cards: Facts and Info to Know, 14 September 2020: greetingcard.org
- Samek, A. and Longfield, C. (2023), "Do Thank-You Calls Increase Charitable Giving? Expert Forecasts and Field Experimental Evidence", American Economic Journal: Applied Economics, summarized by the American Economic Association
- Atkinson, H., "Actually, Calling Donors to Thank Them Does Make Them More Likely to Give Again (and Give More)", Bloomerang, March 2020: bloomerang.com
