Email Marketing Bible, Chapter 6: The emails that make money
Automated flows earn 17.6x more per recipient than broadcasts, and the strongest single flow about 30x. The welcome series, the abandoned cart reminder and the post-purchase follow-up, with the 2026 revenue-per-recipient numbers for each.
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Cyril Nie
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Automated emails — the ones that send themselves when someone does something — make 17.6x more money per person than one-off blasts on average, and the best single flow reaches about 30x. Set these up before you spend another minute on campaign ideas. Here are the big three.
1. The welcome series
First impressions become first purchases. The best brands convert 8% of new subscribers with their welcome flow. Send 4–6 emails over 7–10 days: your story, your bestsellers, some proof people love you, then a time-limited offer for anyone who hasn’t bought yet. Don’t lead with the discount. Lead with the story.
2. The abandoned cart reminder
Over 70% of online carts get left behind. The best recovery flows bring back about 17% of them. Send the first email within 1 hour — not 24, not 4. Email one: a simple reminder with the product photo. Email two, a day later: proof and answers to common worries. Email three, at 48–72 hours: a small sweetener if your margins allow. Top programs earn $3+ per person on this flow alone.
3. The post-purchase follow-up
Most brands go silent after the sale. Money on the table. Confirm the order, share tips for using the product, ask for a review 10–14 days after delivery (that timing gets 3–5x more reviews), and suggest the matching product. If people re-order every 30 days, remind them on day 25 with a one-click reorder link.
Bonus: the win-back
When a customer goes quiet, don’t wait months. Send a value reminder, then a “we miss you,” then one final “here’s what you’re missing.” Expect to re-activate 5–10%. After that, stop sending — a quiet goodbye protects your reputation.
One guardrail: don’t stack flows on top of each other. If someone qualifies for a cart reminder and a promo, send the cart reminder only. A simple cap works too: no more than one automated email and one campaign per person per day.
Common questions
Which email automations should you build first?
The welcome series, then the abandoned cart reminder, then the post-purchase follow-up. In that order. The welcome series reaches people at the moment of highest interest and typically produces the highest revenue per recipient of any email you send.
How much more do automated emails earn than campaigns?
About 17.6 times more per recipient on average: $1.94 against $0.11 for campaigns across Klaviyo’s 2026 dataset of 183,000+ stores. The strongest single flow, abandoned cart, reaches roughly 30 times the campaign baseline. Automated emails are triggered by something the person just did, so they arrive relevant and timely, while a broadcast arrives on the sender’s schedule regardless of context.
How many emails should a welcome series have?
Three to five. The first sends within minutes and delivers whatever was promised at signup. The rest space out over one to two weeks, each with a single job: establish what you do, handle the common objection, and make one clear offer.