The five Klaviyo flows that turn first orders into repeat revenue

Renting customers vs owning them

Acquisition gets the attention, but the economics of most DTC brands are decided after the first order. When there's no retention layer, every sale has to repay its own acquisition cost — the brand is renting customers from ad platforms. One UK supplements brand came to us in exactly that position: healthy acquisition, and every sale a first sale. Building the flow system took email and SMS to 34% of revenue and tripled the repeat-purchase rate.

The five flows, in priority order

Flows are automated journeys triggered by behaviour; campaigns are one-off sends. Build the flows first — they compound with zero ongoing effort.

• Welcome — the highest-intent moment a subscriber will ever have. Introduce the brand, answer the category's objections, make the first order easy.
• Abandonment — checkout first, then cart, then browse. Each step back needs a lighter touch and a different argument, not a bigger discount.
• Post-purchase — set delivery expectations, teach the product, invite the review. The goal is a confident second order, not an immediate upsell.
• Replenishment — for consumables, timed to actual usage windows. The right reminder at the right week feels like service, not marketing.
• Win-back — a deliberate sequence before a customer goes cold, and a sunset that stops mailing the ones who have. List hygiene protects deliverability for everyone else.

Segmentation is the multiplier

The same five flows perform very differently once they branch on behaviour: first-time versus repeat, full-price versus discount-led, category A versus category B, engaged versus lapsing. A subscriber nudge belongs in the replenishment flow of a repeat buyer — not in a first-timer's welcome. None of this needs fifty segments; it needs the five or six that map to genuinely different intents.

Measure it like a channel, not a campaign

Open rates flatter and click rates mislead. The numbers that tell you the retention layer works: the share of total revenue attributed to flows, the repeat-purchase rate over 90 and 180 days, and revenue per recipient. If flow revenue share is under 20% for a repeat-purchase category, there's usually a system to build; when it's dependable and high-margin, the layer is doing its job — largely on autopilot.

Where SMS fits

SMS earns its place in the moments where immediacy matters — the checkout abandonment window, the delivery update, the back-in-stock alert — and wears out its welcome everywhere else. Treat it as the sharp edge of the same system, under the same consent and the same measurement, not as a second list to blast.