Send the Discount Only to the Right People

The problem with treating your list as one audience

The usual story goes like this. A founder runs a public sale. It barely moves the bottom line. So they decide the fix is ‘members only.’ The next promotion goes to everyone with an account or an email signup. And they treat that whole list as one audience.

But the word ‘member’ hides a divide. Your list holds two very different groups. Signups who have never bought anything. And past buyers. They share an inbox. They do not share the same math.

The never-bought group still has to be won, like any stranger. Winning them takes real marketing money. The past buyers were already won. Their ad cost is paid, sunk in their first order. Emailing them costs next to nothing. Hand both groups the same deep discount, and one of them quietly turns your promotion into a loss.

This article is about the first one: discounts. The same 25% code can make money or lose it. It depends on who uses it. Each buyer carries a different ad cost. The skill is not picking the discount. It is picking who gets it.

Three ways to run the same 25% promotion

Ten buyers per group where an offer exists. Dollar figures are each group’s total contribution for the week.

Look at the first column. The public sale posts the biggest revenue of the three, $2,250. It keeps the least: $50. Two of its three groups lose money on every sweater. The past buyers spend their profit bailing the others out.

The tiered version keeps $250. Five times the public sale. And the dashboard shows $600 less revenue. Nothing changed about the product or the discount depth. The deep code went only to people whose ads were already paid. The never-bought signups got a lighter welcome offer. That offer still earns the normal $10. Run this play weekly, and the gap grows. About $13,000 a year, against the public sale’s $2,600.

One honest note. This comparison holds volumes equal, to show the structure alone. In real life the lighter 10% offer wins fewer signups than a 25% offer would. But fewer sales at +$10 each still beat more sales at -$5 each.

In this example, the biggest-revenue campaign was the least profitable one. The discount was never the problem. Who received it was.

2. How to build a tiered member-only program

The setup is an afternoon in your email platform, plus one spreadsheet. The math decides the offers. The list split decides who sees them.

1. Split your list in two: bought before, never bought. Every major email platform can split a list by purchase history. The cut is simple. Zero orders, versus one or more. This is the single most valuable split you will build all year.
2. Give past buyers the deep code. Somewhere between 20% and 30% off. Their ad cost is already paid, sunk in their first order. So the contribution math carries a deep discount with ease. Frame it as a loyalty reward, not a sale.
3. Give never-bought signups a lighter welcome code. Around 10% to 15% off. Enough to nudge a first order. Shallow enough that the order still pays for the marketing it takes to win them. The welcome code has one real job: it turns a signup into a past buyer. And a past buyer earns the deep code.
4. Judge every campaign on contribution per group, not revenue. Build the group table above with your own numbers each time. Revenue will always flatter the campaign that converts the most people. Including the ones who lose you money.
5. Protect the codes and keep the program fresh. Use single-use codes tied to each customer’s email, with short expiry windows. Watch who uses them, and look for leaks. Rotate the member offer every six to eight weeks: early access, a gift with purchase, a category-only deal. The discount must never become the expected price.

3. One warning before you act

Tiering is not worth it at every size. Under about 1,000 engaged subscribers, the extra work outweighs the lift. Grow the list first. Keep offers simple. And public sales still have a place: clearing seasonal stock, meeting a competitor’s launch, backing a collaboration. A public discount should be a planned, occasional tool. Not your default way to make a slow week feel better.

Watch the tone with new signups, too. Nobody should feel demoted. ‘Welcome offer’ and ‘loyalty reward’ are both gifts. They just answer different situations.

4. Frequently asked questions

5. Quick reference: what to avoid and what to apply