Customer retention strategies that work for a small business: follow up, ask, and win back the quiet ones

Most customers don't leave because of one bad experience. They drift. They needed you in March, nobody got in touch in June when they needed you again, and a competitor's ad reached them first. Nothing went wrong that you could point to. You just weren't there on the day.

You don't see it happen because there's no moment when a customer leaves. There's only an order that doesn't come. By the time a slow month tells you, the customers who made it slow went quiet two or three months earlier.

So retention in a small business comes down to follow-up with people who've already said yes once. The rest of this guide is how to do that on a schedule, so it doesn't depend on remembering.

Every business has a rhythm people buy on. An aircon gets serviced every three to six months. A haircut is every four to eight weeks. A printer needs toner, a pet needs grooming, a company renews its order before the new financial year.

For each customer, keep three things:

• the date they last bought
• what they bought
• the date they're likely to need you again

That third date is the one that matters. Work it out from what they bought ("serviced 3 June, due again in early September") and put it where you'll see it that week. The free CRM spreadsheet template has a column for it and flags the rows that are due.

The follow-up most businesses never send is the one after a sale that went fine. A week later, ask one question:

"Hi Mrs Lim, it's Wei from Coolbreeze. Just checking the bedroom unit's been cold since Tuesday's service. Anything we should come back for?"

It does three jobs. It catches a problem while it's small and fixable. It reminds them who you are. And it gives them an easy reason to reply, which keeps the chat near the top of their WhatsApp for next time.

Don't sell in this message. Checking in and then asking for another booking in the same breath turns a service message into a sales message, and the customer can tell.

When a regular goes quiet past their usual date, ask. Keep it short and make it easy to answer:

"Hi Mr Tan, it's Wei from Coolbreeze. We haven't seen you since March. Did something put you off? Whatever it was, I'd rather know."

You'll hear things like "your price went up", "the technician was late twice" or "I moved". Some of those you can fix, some you can't, and all of them tell you something. Keep a note of every answer. Three customers saying the same thing is a problem to fix this month.

Ask the customers who stayed, too. One question after a job, such as "What's one thing we could do better?", gets more honest answers than a long survey.

A small business doesn't need points and tiers. It needs customers to feel noticed.

• Remember something about them and use it: their dog's name, the unit that always gives trouble, the order they place every quarter.
• Thank a customer on their fifth booking, in words, before any discount.
• Give regulars something new customers don't get, like first pick of the Saturday slots or a free check on a second unit.
• Say thank you for a referral, every time, the same week.

For the words, the WhatsApp message templates include a thank-you after a sale, and there are more in the thank-you messages to customers.

A customer who's been gone longer than twice their usual gap is worth one real attempt to win back. Give them a reason to come back that's about them, not a blanket discount, and ask plainly. The win-back guide has the messages, and when to stop.

If they say no, or don't reply after two tries, mark them as lost and stop messaging. A customer who's asked twice and ignored it doesn't want a third.

Put 30 minutes in the calendar on the same day each week. Monday morning works for most businesses, before the week fills up.

1. Open the list of customers whose due date falls this week or next. Message each one to book.
2. Open the list of customers who bought last week. Send the one-week check-in.
3. Open the list of regulars more than a month past their due date. Send the "did something put you off?" message to three of them.
4. Write down anything customers told you last week that needs fixing, and who's fixing it.

Here's a made-up week for Coolbreeze, a small aircon servicing business:

That's 9 bookings from 14 due customers, about 64%, from half an hour of messages. Your own numbers will differ. Track them for a month before deciding what's good.

Once a quarter, check whether the routine is working. For a business without contracts, the simplest measure is: of the customers who bought from you in a period, how many bought again in the next one?

A made-up example: Coolbreeze serviced 200 customers from January to June last year. 118 of them booked again within the next six months. 118 divided by 200 is 59%. If that number goes up after a few months of the weekly routine, the routine is doing its job.

If your customers are on ongoing plans or contracts, the client retention rate page has the formula that counts new customers separately, with a worked example.

The other side of that number is the churn rate: the share of customers you lost. And the customer lifetime value page works out what one customer who stays is worth to you.

A past customer isn't the same as a customer who agreed to hear about offers. These are the rules in two countries, summarised from the source. It isn't legal advice.

In the US, the FTC's CAN-SPAM guide says the law covers "any electronic mail message the primary purpose of which is the commercial advertisement or promotion of a commercial product or service", and that "a message to former customers announcing a new product line" must comply. Every marketing email needs a clear way to opt out, and the guide says you "must honor a recipient's opt-out request within 10 business days."

In Singapore, the Do Not Call rules in the Personal Data Protection Act cover marketing messages to Singapore phone numbers, including texts. The Act's Eighth Schedule leaves out a message whose sole purpose relates to an ongoing relationship with the customer, but the PDPC's guidelines say "once-off transactions are insufficient to establish an ongoing relationship". So a promotion to someone who bought once needs a Do Not Call check within 21 days before you send it, or their clear consent. The WhatsApp for business guide goes through what that means for WhatsApp.

The one-week check-in, a reminder about a booking they made and a reply to a question they asked aren't promotions. A "10% off your next service" added to any of them is.

• Only getting in touch when you want to sell something.
• Sending the same discount to everyone, so regulars pay the same as strangers.
• Waiting for complaints instead of asking.
• Keeping the due dates in your head.
• Messaging a customer who's said no, again.
• Measuring retention once a year, when it's too late to change anything.

This guide is free. ActivityTracker, the app we make, is paid, and here's what it does for keeping customers.

• Every customer's WhatsApp chats and notes sit on their record in the client list, with ready-made views for customers you haven't spoken to in 30 days and people with no next step
• Type "check in with Mrs Lim Tuesday" and it's a dated follow-up with a reminder
• Broadcasts send one message at a time with each customer's name in it, and leave out anyone marked as opted out
• Workflows can ask a customer how it went after a job, or ask for a referral after a win

The WhatsApp parts work by linking your number as a device, the way WhatsApp Web is. WhatsApp's linked devices page warns that "linking your device through unofficial apps or websites may put your account at risk."