For the 2025 season, the Postal Service recommended dropping First-Class Mail by December 17 for delivery before December 25. Anyone who sat down to write their client notes the week before Christmas was already late. Search this topic and the results are all message wording. The mailing deadline does not come up.
Both are below: thirty messages you can copy, grouped by the kind of relationship you have with the recipient, then the backwards calendar that gets them into a mailbox on time.
What to write in a business holiday card to clients
Name the person, name one specific thing from the year you worked together, thank them for it, and close with a wish for the season. Three sentences. Skip the company update, skip the pitch, and skip any greeting that assumes which holiday they observe.
For clients you have worked with for years.
- Four years in and I still look forward to our Monday calls. Here is to 2027.
- Thank you for a steady year. [The June launch] was the most fun we had all year, and I am glad we built it with you.
- You have been with us since [2021], which makes you one of the reasons this business exists. Happy holidays from all of us.
- Every December I write these notes, and yours takes the longest, because there is too much to thank you for.
- Wishing you and everyone at [Company] a real break and an easier January than last year’s.
- Thank you for trusting us with [the rebrand] this year. It was the project I was proudest of.
For clients who signed this year.
- Your first year went better than either of us predicted on that first call. Thank you for taking the chance.
- Thank you for coming aboard in [March]. Nine months in, and I am glad we get to keep going.
- It has been a good first year. Thank you for the patience during onboarding and for [the introduction to Sarah].
- Welcome to the part of this relationship where I send you a note every December. Thank you for a strong first year.
- A new vendor is a leap of faith on both sides. Thanks for taking it, and have a good end to the year.
- Thank you for a great first year. [The Q3 numbers] made the whole team’s month. Here is to 2027.
For clients who paused or went quiet.
- We have not worked together since [the spring], and I did not want the year to close without saying thank you for the years we did.
- Thinking of you and the team this month. Whatever [next year] holds, I hope it is a good one for you.
- No agenda in this one. Just happy holidays, and I still keep an eye on what [Company] is doing.
- I know it was a hard year on your end, and I did not want that to be the last thing between us. Wishing you a genuinely better 2027.
- The door is open whenever you want it. In the meantime, happy holidays to you and [the Denver crew].
For referral partners and vendors.
- Three of our best clients this year came from you. Thank you, and happy holidays.
- Thank you for [the introduction to Marcus] in August. It turned into the biggest project of our year.
- You made my job easier every single time we worked together this year. Have a good break.
- Thank you for [turning that print run around in two days] in October. You saved us.
- Working with [Company] has been the least complicated part of my year. Thank you, and happy holidays.
- I send more business your way than anyone else’s, and there is a reason for that. Thank you for a good year.
For prospects you did not close.
- You went another direction this year and I have no hard feelings about it. Wishing you a good holiday and a smooth [rollout].
- Thank you for the time you gave us back in [May]. Happy holidays, and I hope [the new system] is working out.
- Still glad we met this year, deal or no deal. Have a good end to it.
- No pitch in this one. Just happy holidays, and I hope [the Austin office] opening went well.
Short and all-purpose.
- Thank you for a good year. Wishing you a restful holiday and a strong start to 2027.
- Happy holidays from all of us at [Company]. We are glad you are with us.
- Thank you for your business this year, and for the trust behind it. All the best this season.
The one line that makes any of these work
Most of the messages above have a bracket in it. The bracket is the part that does the work. “Thank you for a great year” is what a recipient expects and forgets. “Thank you for [turning that print run around in two days] in October” is what they read twice.
That line is also why this job is harder than it looks. A mail merge can put a first name at the top of 300 identical messages, and all 300 recipients will recognize the shape of it, because they get the same message from their bank and their dentist. The detail that makes a note land has to come out of an actual memory of an actual account, one at a time. There is no CRM field for the time somebody stayed late to fix your data import.
Pull last year’s biggest ticket, project, or invoice for each account before you start writing, so the detail is already in front of you. If you genuinely cannot name anything specific for a client, use one of messages 28 to 30 and move on. A short honest greeting beats a long manufactured one.
When does a business holiday card need to be in the mail?
Work backwards from the arrival date. Here is the calendar for a December 25 arrival in 2026.
| Step | Date | What it covers |
|---|---|---|
| Arrival at the recipient | Fri, Dec 25 | The date the note should be in their hands |
| USPS send-by, First-Class Mail | Thu, Dec 17 | This is the 2025 recommended date, used here as the planning anchor |
| Drop at the post office | Tue, Dec 15 | A two-day buffer for pickup, sorting, and one bad weather day |
| Hand-writing window closes | Mon, Dec 14 | Size this window by list length, not by feel. See what the alternative costs |
| Hand-writing window opens | Varies by list size, see below | Count backwards from Dec 14, not forwards from Thanksgiving |
| List finalized, addresses verified | Fri, Nov 20 | Returned mail is postage spent on nothing |
One caveat. December 17 is the date the Postal Service recommended for the 2025 season, per its 2025 holiday mailing and shipping dates announcement. USPS confirms each season’s dates in the autumn, and the 2025 announcement did not land until September 17. Plan against December 17, then check the USPS holiday news hub once the current year’s dates are posted.
How long 300 notes actually takes
Three minutes per note is fair once you include addressing the envelope and looking up the specific detail. At one focused hour per business day, which is about as much as anyone sustains in December, the window works out like this.
| List size | Writing time at 3 min a note | Start writing by |
|---|---|---|
| 50 | 2.5 hours | Thu, Dec 10 |
| 150 | 7.5 hours | Thu, Dec 3 |
| 300 | 15 hours | Mon, Nov 23 |
| 500 | 25 hours | Mon, Nov 9 |
A 500-name client list means starting the second week of November to make a Christmas arrival. If that start date sounds unrealistic, it is, and that is the actual decision point. The honest options are to cut the list, start in early November anyway, or take the handwriting off your own desk. What does not work is discovering the arithmetic on December 18.
Why the default greeting should not be Christmas
You know your clients’ companies. You do not know their households. A client list of any size includes people who observe Hanukkah, Diwali, or nothing at all, and a note that assumes otherwise turns a goodwill gesture into a small moment of being counted out.
None of the 30 messages above name a specific holiday. That is the same discipline as the specific detail: say the true thing about the relationship and let the season be the season. “Thank you for a good year” carries every bit of the warmth of “Merry Christmas” and excludes nobody. If you know for a fact that a client celebrates a particular holiday, name it in that one note. Applying it across the whole list is guesswork.
What each note costs
Postage is the floor. The Postal Service’s July 12, 2026 price change took the First-Class Mail Forever stamp from 78 cents to 82 cents, part of an approximately 4.8 percent rise across mailing services. Do the arithmetic yourself: 82 cents of postage plus a dollar or two for the note and the envelope puts you somewhere around three dollars a recipient.
At 300 recipients that is roughly $900 and fifteen hours. Against a client base worth six or seven figures a year, the $900 is trivial. The fifteen hours is the expensive half, and it is the same trade every physical outreach program runs into. Price it in November, not mid-list.
The seasonal note is the easiest one to get right, because it asks for nothing. For the version that runs year-round and attaches to deals, see handwritten thank-you notes that win deals and keep clients. For teams defending the line item internally, getting a direct mail budget approved covers the argument, and clienteling at scale is the closest neighbor at the high-touch end.
FAQ
What should I write in a business holiday card to a client?
Three sentences. Name the person, name one specific thing from the year you worked together, and close with a wish for the season. Avoid company updates, avoid any sales language, and avoid greetings that assume which holiday the recipient observes. The specific detail is what separates a note that gets read from one that gets recycled, and it is the part a template cannot supply.
When do I need to mail business holiday cards to arrive before Christmas?
For the 2025 season, USPS recommended a December 17 send-by date for First-Class Mail in the contiguous United States for delivery before December 25. Plan to drop your mail around December 15 to leave a buffer, which means the writing has to be finished by roughly December 14. USPS publishes each season’s dates in the autumn, so confirm the current year’s recommendation before you commit to a date.
How long does it take to handwrite 300 client holiday cards?
Around 15 hours at three minutes per note, including addressing the envelope and recalling a specific detail for each recipient. At one focused hour per business day, a 300-name list means starting in the week of November 23 to make a December 25 arrival. A 500-name list means starting in the second week of November. Working that out in mid-December is what turns a Christmas card into a New Year card.