Ecommerce Email Automation: The Core Flows

Flows versus campaigns, and why automation comes first

Email has two engines. Flows are automated sequences triggered by behaviour: someone abandons a cart, joins your list, places an order. Campaigns are the one-off broadcasts you schedule, launches, sales and newsletters. Automation is the asset that compounds; campaigns are the amplifier on top.

The reason automation comes first is simple. A flow reaches a customer at the precise moment of highest intent and keeps earning with no recurring effort once it is live, while a campaign has to be conceived and sent every single time. That is why we always build the flow stack before leaning on the calendar, a sequence we lay out in full in our DTC email marketing strategy, and why the split between the two is worth understanding through flows versus campaigns.

The core flow stack, in build order

Not every flow is worth the same, so we build in order of revenue per hour of work, starting at the highest-intent moment and widening out. Here is the full stack, each linking through to its dedicated playbook.

1. Welcome series

Triggered the moment someone subscribes, the welcome series turns your warmest traffic into first-time buyers and sets inbox expectations that protect deliverability. It usually carries the highest revenue-per-recipient of any flow. Full build in our Klaviyo welcome flow guide.

2. Abandoned cart

Triggered on Checkout Started, the abandoned cart flow recovers 5 to 11 percent of otherwise lost checkouts. It is the single highest-converting automation you can run because intent is at its peak. See the abandoned cart flow teardown.

3. Browse abandonment

Triggered on Viewed Product, browse abandonment catches shoppers who looked but never added to cart. Lower intent than a cart, so it is gentler and shorter, but it widens the recovery net considerably. Detailed in our browse abandonment flow guide.

4. Post-purchase

Triggered on Placed Order, the post-purchase flow drives the second order, sets up cross-sells, gathers reviews and reduces buyer's remorse. Lifetime value really starts at the second purchase, which makes this flow strategic. See the post-purchase flow guide.

5. Winback

Triggered on time since last order, the winback flow re-engages customers who have lapsed past their normal reorder window and pulls dormant revenue back at almost no acquisition cost. Covered in the winback flow guide.

6. Replenishment

For consumable products, the replenishment flow reminds customers to reorder just before they run out, timed to the product's consumption cycle. It is the closest thing to free revenue a consumables brand has, and it often overlaps with the post-purchase flow.

7. VIP and loyalty

Triggered when a customer crosses a value or order-count threshold, the VIP flow rewards and recognises your best customers, the small percentage who drive a disproportionate share of revenue. Getting the threshold right depends on a solid segmentation strategy.

What every good flow has in common

The flows differ in trigger and message, but the ones that earn share the same underlying discipline:

• The right trigger. A flow built on the wrong event, Added to Cart instead of Checkout Started for example, misses the highest-intent moment. A clean Shopify integration is what makes the right triggers available.
• Conditional splits. Branch on purchased versus not, engaged versus not, first-time versus returning, so the message fits the person rather than treating everyone the same.
• Purchase exits. The moment someone buys, they should stop receiving the selling emails in that flow. Chasing a customer with a discount they already used erodes trust and deliverability.
• Deliverability underneath. A flow that lands in spam recovers nothing, so authentication and list health sit beneath the whole stack. That is the job of the deliverability guide.
• Testing over time. Flows decay. The best-performing accounts A/B test one variable at a time and revisit copy, timing and offer every quarter.

How much the stack is worth, realistically

Directionally, a well-built flow stack drives 25 to 45 percent of total email revenue, and email as a whole should be pulling 20 to 35 percent of store revenue for a healthy DTC brand. Those are ranges to aim at, not promises, and the actual figure depends on price point, traffic quality and how hard your sign-up form works. We break the revenue question down properly in our guide to how much revenue email should drive.

The important point is that this revenue is largely passive once built. Unlike ads, which stop the moment you stop paying, a flow you build in week one is still earning in month twelve. That is why we treat the automation stack as the highest-leverage work in the whole channel.

Where Nelvio comes in

Seven flows, each with its own triggers, splits, timing and copy, all sitting on a clean integration and a healthy list, is a serious build. Most founders get two or three flows half-live on Klaviyo defaults and never finish the rest, leaking revenue the whole time they mean to get to it.

Building and running the full stack is what we do. For Eternal Collagen we built six live flows that drove an extra £90k in email revenue in four months, while the list grew from around 500 to over 11,000 subscribers. We are not claiming that is typical or guaranteed, only that it is exactly this work, done by a senior operator rather than left on defaults. If you want the whole stack built and tuned rather than half-finished, work with Nelvio, or start with a £499 Klaviyo audit and we will tell you which flow to build next and what it is worth.