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What to Write in a Thank You Note to a Client
In a thank you note to a client, write three things. Thank them for the exact work or choice. Name one detail you truly liked about working with them. Then add a warm line about what comes next. Keep it to four or five sentences. Write it by hand when you can, and sign your own name. One true detail is what makes it feel personal.
A handwritten note is one of the few things in business that still gets kept. Clients put them on desks and pin them to boards. It costs you five minutes and a stamp. It tells the client you think of them as a person, not an account.
The note works when it's specific and short. Name the project, the choice or the moment. Mention something about them: their team, their patience, a good talk. Leave out the sales line. A note that asks for nothing is the one they remember the next time they need what you do.
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Free, no signup. The example is filled in: press the button, then replace it with your own situation. In Capstone, a message like it is written for each person you know when their check-in is due.
11 examples to copy
One message is easy. Hundreds of people, all year, is the hard part. Capstone Outreach puts everyone you know on a rhythm you pick, from weekly to every three months. When someone is due, a message like these is already written in your voice from your history with them. You approve it, and it goes from your own email or phone. See how it works.
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Everyone on a rhythm. Who is due, and when. Recorded in the app on a demo account.
1. After a first project together (handwritten note)
Why it works: Naming the risk of hiring someone new makes the client feel their choice was seen.
2. Long-time client, no occasion (handwritten note)
Why it works: A note with no occasion sticks the most, because it can only be about them.
3. After a contract renewal (handwritten note)
Why it works: Tying the thanks to a goal they named shows the renewal bought real focus, not just more of the same.
4. After they referred someone to you (handwritten note)
Why it works: Every referrer quietly worries about how it will go. Promising to make them look good answers that.
5. After a client hosted you or bought lunch (handwritten note)
Why it works: Showing that the visit taught you something useful makes their kindness feel worth it.
6. After a hard project with a patient client (handwritten note)
Why it works: Thanking a client for staying calm under pressure builds loyalty that outlasts the rough patch.
7. Same-day email version after a first meeting (email)
Subject: Thank you for today, [Name]
Why it works: Repeating back what you learned shows you listened. The promised next step keeps things moving.
8. End-of-engagement email to a client team (email)
Subject: Thank you, [Client Company] team
Why it works: Naming team members gives your contact something easy to forward. That spreads goodwill inside the client's company.
9. Year-end note to a top client (handwritten note)
Why it works: A handwritten year-end note stands out in a season of printed cards and mass emails.
10. Short thank-you text after a quick favor (text)
Why it works: Small favors deserve a fast, small thank-you. A text matches the size.
11. Client who just closed or launched something big (handwritten note)
Why it works: Putting their win first and your role second keeps the note generous, not self-praising.
Sending these to more than a few people? See how people keep track of who to follow up with, and when: what a personal CRM does and the best personal CRMs, compared.
When to send it
- Write it within a few days of the moment you're thanking them for. A late note loses its warmth.
- Mail it instead of handing it over in a meeting. Then it arrives on its own and gets read.
- Use a plain card or simple paper. Your handwriting matters more than the design.
- If you can't write by hand or the client is remote, send a short email the same day. Use the same structure.
- Keep a small stack of cards and stamps at your desk, so the note happens when you think of it.
Subject lines
- Thank you for today, [Name]
- Thank you, [Client Company] team
- Thank you for trusting me with [project]
- A note of thanks
- Thank you for the introduction
- Thank you for another year
- With gratitude
- Thank you for your patience
- A quick thank-you
- Thank you for lunch
What to avoid
- Don't open with 'Thank you for your business' and stop there. Name the real work.
- Don't put a business card, brochure or offer in the envelope.
- Don't print the note and sign it. If it's a card, write the whole thing by hand.
- Don't write more than the card holds. A short note feels thought through, and a crowded one feels rushed.
- Don't misspell the client's name or company. Check it before you seal the envelope.
- Don't send the same wording to every client in the same week. They compare notes.
After you send it
A handwritten note needs no follow-up. Don't mention it unless they do. Keep the bond moving through the work. Check in a few weeks after a project ends. Send a useful article when you see one, and congrats when they hit a milestone. Aim to reach good clients three or four times a year. Save handwritten notes for moments that deserve them, so each one keeps its weight.
Building the habit: how to keep in touch with contacts and what a personal CRM does.
Handwritten today. What comes after the card? A card is a great start. On your next client call, Capstone's notetaker joins Zoom, Meet or Teams. Afterward it leaves a follow-up draft for you to review.
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A study of 20 million LinkedIn members found that acquaintances, more than close friends, led to new jobs (Science, 2022). Capstone keeps those people warm. You approve every message, and it goes from your own email or phone.
Frequently asked questions
What to say in a thank you note to a client?
Thank them for a project, choice or kind act. Mention one detail you truly liked, and close with a warm line about the future. For example: 'Thank you for trusting me with the rebrand. Your team's quick feedback made it easy. I'm looking forward to the next one.' Four or five sentences is plenty.
Should a thank you note to a client be handwritten?
Yes, when you can. A handwritten note stands out because so few people send them, and clients often keep them. For remote clients or same-day thanks after a meeting, a short email is fine. Many people send a quick email right away. They save a handwritten note for bigger moments like renewals or year-end.
How do you start a thank you note to a client?
Start with 'Dear [Name],' and go straight to the thank-you. A line like 'Thank you for trusting me with [project]' works. Skip bland warm-up lines about the weather or the season. The first sentence should tell them just what you're grateful for. That's the line they'll read most closely.
How do you end a thank you note to a client?
End with a short line about the future and a warm sign-off. Try 'I'm looking forward to the next one' or 'I'm grateful to have you as a client' before you sign off. Follow it with 'Warmly,' 'With thanks,' or 'Gratefully,' and your first name. Don't close with a sales line or a request.
When should you send a thank you note to a client?
Send it within a few days of the moment you're thanking them for. That could be a signed deal, a finished project, a renewal, a referral or a meeting. Year-end is also a natural time for top clients. A note with no occasion at all can stick the most, because it can only be about them.