Customer Day
Message for Customer Day: 12 templates, with Consumer Day
Quick answer
What should you write in the message for Customer Day?
A message for Customer Day, celebrated on September 15, thanks the person by name and mentions something they did during the year, like the first purchase or a referral. If there is a gift or discount, say so in one line, with a deadline. Send only to people who already bought and agree to receive messages.
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Messages for September 15, Customer Day, and for March 15, Consumer Day: thank-you only or with an offer. Copy and replace what is in brackets.
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See the 30 automatic message templates for customers, grouped by moment.
Summary in 7 facts
- Messages for September 15, Customer Day, and for March 15, Consumer Day: thank-you only or with an offer.
- A message for Customer Day, celebrated on September 15, thanks the person by name and mentions something they did during the year, like the first purchase or a referral.
- If there is a gift or discount, say so in one line, with a deadline.
- Swipe the table sideways to see all the columns.
- Gift on the next visit For a neighborhood business, with customers who drop by often.
- Promotion notice In the week of March 15.
- When the customer replies In the reply to "thank you" or to a compliment.
By the numbers
| Number | What it means |
|---|---|
| 30 templates | See the 30 automatic message templates for customers, grouped by moment. |
| 10% | On Customer Day, our regulars get [10%] off [product or service] until [Sunday]. |
| 67 businesses | The CertuAI team measured the hour customer messages arrive at 67 businesses that answer with CertuAI's AI: the busiest hour was 11 am, and 12.7% arrived at night on a weekday. |
| 122,720 messages | CertuAI customer service data: 67 businesses of various kinds, 122,720 customer messages, from Jul 30 to Sep 30, 2026, measured on Oct 9, 2026. |
Customer Day and Consumer Day: the difference
Two dates, two ways of talking.
| Customer Day | Consumer Day | |
|---|---|---|
| When | September 15 | March 15 |
| In 2027 it falls on | Wednesday | Monday |
| What the message usually carries | Thank-you | Offer |
| Who to send to | People who already bought | People who already bought and agree to receive offers |
| The caution | Don't turn it into advertising | State the whole promotion rule |
Swipe the table sideways to see all the columns.
Message for Customer Day, thank-you only
Short
September 15, in the morning.
Oi, [Nome]! Hoje é o Dia do Cliente, e a gente não ia deixar passar. Obrigado por escolher a [Empresa]. É por você que a porta abre todo dia.
now ✓✓With what they did during the year
For someone who referred, came back or gave a suggestion.
Feliz Dia do Cliente, [Nome]! Este ano você [indicou a gente para a sua irmã], e isso vale muito por aqui. Obrigado de verdade.
now ✓✓New customer
For someone who bought for the first time this year.
Oi, [Nome]! Hoje é o Dia do Cliente, e você virou cliente da [Empresa] este ano. Obrigado pela confiança. Espero te ver muitas vezes por aqui.
now ✓✓Business to business
When the customer is another company.
Prezado [Nome], neste Dia do Cliente a [Empresa] agradece a parceria com a [empresa do cliente]. Seguimos à disposição para o que precisarem.
now ✓✓
Customer Day message with a gift or discount
Gift on the next visit
For a neighborhood business, with customers who drop by often.
Feliz Dia do Cliente, [Nome]! Na sua próxima visita, até [data], tem [um mimo] esperando por você. É só dizer o seu nome no caixa.
now ✓✓Discount with a deadline
In the week of the 15th.
Oi, [Nome]! No Dia do Cliente, quem já é da casa tem [10%] em [produto ou serviço] até [domingo]. É só mostrar esta mensagem.
now ✓✓Only for people who already bought
When the offer won't be advertised to the public.
Oi, [Nome]. Esta oferta não está no anúncio: é só para quem já comprou com a gente. [Oferta], até [data]. Quer que eu separe para você?
now ✓✓
Message for Consumer Day, March 15
Promotion notice
In the week of March 15.
Oi, [Nome]! Na Semana do Consumidor, de [data] a [data], o [produto] sai de [valor] por [valor]. Vale enquanto durar o estoque. Quer que eu reserve um?
now ✓✓With the exchange policy
Together with the confirmation of a purchase on sale.
Pedido confirmado, [Nome]! Lembrando: produto em promoção também tem troca, em até [prazo], com a nota. Qualquer problema, é só chamar aqui.
now ✓✓No promotion, with a commitment
When you won't make an offer.
Oi, [Nome]. Hoje é o Dia do Consumidor. Aqui na [Empresa] a regra é a de sempre: preço na etiqueta, troca sem burocracia e resposta no mesmo dia. Conte com isso.
now ✓✓
Reply to someone who says thanks and the last day of the offer
When the customer replies
In the reply to "thank you" or to a compliment.
A gente que agradece, [Nome]! Mensagem assim faz o dia de quem trabalha aqui. Até a próxima!
now ✓✓Last day
Only for people who showed interest in the offer.
Oi, [Nome]! Você tinha perguntado da oferta do Dia do Cliente. Ela termina hoje, às [18h]. Quer que eu separe o seu antes de fechar?
now ✓✓
The next date: Christmas and New Year message for customers →
Three rules for the Customer Day message
So the date doesn't become just another promotion.
Thanks and offer, each in its own sentence
Thank you first. The offer, if there is one, comes after and fits in one line.
The deadline and the whole rule
Until when it's valid, for which product and whether there is a limit. A promotion with a surprise at the register turns into a complaint.
Only for people who are customers
The day belongs to those who already bought. To attract new people there are ads.
See how it looks in your industry
Each industry gets different questions on WhatsApp. Pick yours to see how CertuAI's AI serves that kind of customer.
How to prepare the Customer Day message
One week ahead is enough.
Separate who bought during the year
And remove those who asked not to receive messages and those with an open problem.
Decide whether there will be an offer
If there is, write the whole rule: product, amount, deadline and limit.
Write two or three templates
One for a new customer, one for an existing customer, one for a company. With each one's name.
Send in the morning and stay nearby
Whoever replies wants an answer the same day, even more so if the offer has a deadline.
Promotions on WhatsApp only for people who agree to receive them
On both dates, the temptation is to send to the whole contact list. The WhatsApp Help Center, in the article How to use WhatsApp responsibly, warns that a broadcast list message only reaches people who saved your number and that frequent sending by list can lead people to report you. According to the same article, accounts reported several times are banned.
In practice: send to people who bought during the year, with their name, once. Those who didn't reply don't get a "last day". And those who asked to leave the list are off before the next date.
For the December holidays, see the Christmas and New Year message for customers, and for each person's special date, the birthday message for customers. More thank-yous are in the closing message for a conversation. How the broadcast list works is in WhatsApp Business broadcast list, and the general list of templates is in automatic messages for customers.
When not to send a Customer Day message
Four cases where the date calls for silence.
- Someone who never bought: not a customer. For that person, the message is advertising from an unknown number.
- Someone with an open complaint or bill: solve it first. "Thank you for being our customer" in the middle of a problem sounds like irony.
- Someone who asked not to receive messages: the date doesn't change the request.
- An offer with no stock or no rule: if you can't say until when it's valid and for how many, don't announce it.
What time customers write: CertuAI's data
Someone who gets the message in the morning can reply at any hour of the day. The CertuAI team measured the hour customer messages arrive at 67 businesses that answer with CertuAI's AI: the busiest hour was 11 am, and 12.7% arrived at night on a weekday.
The measurement runs from July 30 to September 30, 2026. September 15 is inside the window, but was not measured separately, and Consumer Day falls outside it.
| What was measured | Result |
|---|---|
| Hour of the day with the most customer messages | 11h |
| Messages that arrived at night on a weekday, 6pm to midnight | 12,7% |
| Messages that arrived on Saturday or Sunday | 15,8% |
| Customer messages that arrived outside Monday to Friday, 8 a.m. to 6 p.m. | 32,5% |
Swipe the table sideways to see all the columns.
Source: CertuAI WhatsApp Customer Service Index, Q3 2026. CertuAI customer service data: 67 businesses of various kinds, 122,720 customer messages, from Jul 30 to Sep 30, 2026, measured on Oct 9, 2026. Business hours are Monday to Friday, 8 a.m. to 6 p.m., in each account's time zone. Test accounts, test contacts and imported history are left out. Redone every quarter.
Frequently asked questions
When is Customer Day?
Customer Day is celebrated on September 15. In 2027, the date falls on a Wednesday.
What is the difference between Customer Day and Consumer Day?
Customer Day is on September 15 and is usually about saying thanks. Consumer Day is on March 15 and is more tied to offers.
What should you write to say thanks on Customer Day?
The person's name and something they did during the year: "Happy Customer Day, [Name]! This year you referred us, and that means a lot around here."
Do I need to give a discount on Customer Day?
No. A thank-you with their name already marks the date. If you give a discount, say it in one line, with a deadline and the rule.
Can I send the Customer Day message to all contacts?
Only to people who already bought and agree to receive messages. Frequent sending to many people leads to reports, and WhatsApp bans accounts that are reported several times.
What time should you send the Customer Day message?
In the morning, during business hours, so there is time to answer whoever writes back the same day.
Where to go next?
Did the customer reply to the message? The AI answers right away
On CertuAI, when the customer replies wanting to know about the offer or book a time, the AI answers right away, using what you taught the Brain, and leaves the conversation noted in the customer dashboard. When the subject needs a person, it alerts you.
From US$ 75 per month.
Create my agentOi, [Nome]! Hoje é o Dia do Cliente, e a gente não ia deixar passar. Obrigado por escolher a [Empresa]. É por você que a porta abre todo dia.now ✓✓
This is the first message on this page, sent by the AI in your tone, with nobody at the counter.
In short
What should you write in the message for Customer Day? A message for Customer Day, celebrated on September 15, thanks the person by name and mentions something they did during the year, like the first purchase or a referral. If there is a gift or discount, say so in one line, with a deadline. Send only to people who already bought and agree to receive messages.
About CertuAI: CertuAI is the AI that answers a small business's WhatsApp, Instagram and Messenger 24/7, with a built-in CRM, and is a Tech Provider on Meta's WhatsApp Business Platform. Paid plans start at US$ 75 a month, with no lock-in. Create my agent