Build a Shopify Replenishment Reminder Flow

If you sell anything consumable (coffee, skincare, supplements, pet food, refills), your customers will run out on a predictable schedule. A replenishment (reorder) flow reaches them right before they do, making the reorder effortless and, ideally, converting them to a subscription.

Here's how to build one in Audienceful.

What you'll need

A Shopify integration connected to your workspace.
Two short emails.
A sense of your product's typical run-out window (how long one order lasts).

How the replenishment flow works

When a Shopify order is paid, the customer enters the automation, then it waits out the product's lifespan before nudging a reorder:

Wait roughly one run-out window (e.g. a month).
Remind them it's time to restock.
Wait a bit longer.
Offer a subscribe-and-save upgrade so they never run out again.

The key setting is the wait. Tune it to how long your product actually lasts.

Step 1: Connect Shopify

Connect your store from the Integrations tab. The Order paid trigger then appears in the automation builder.

Step 2: Write your two emails

Email 1: the reorder nudge. Remind them they're probably running low and make reordering a one-click action. Example subject: "Running low? Time to restock"
Email 2: subscribe & save. Convert the one-off reorder into a subscription with a small ongoing discount. Example subject: "Never run out: subscribe & save 15%"

Personalize with the {{first_name}} merge tag.

Step 3: Build the automation

In the Automations tab, click New Automation:

Trigger: Shopify event → Order paid.
Wait 1 month (set this to your product's run-out window).
Send Email 1, the reorder reminder.
Wait 1 week.
Send Email 2, the subscribe-and-save offer.

Pick your theme and click Run.

Best practices

Tune the wait to the product. A 30-day supplement and a 90-day filter need different timings, so set the first wait to match.
Make reordering trivial. Link straight to a pre-filled cart or reorder page.
Use it to build recurring revenue. The subscribe-and-save email turns a one-time buyer into predictable monthly revenue.

Start from a template

→ Pick the Replenishment / reorder reminder template when you create a new automation in Audienceful.

Browse the full automation template gallery for more ecommerce flows.

Frequently asked questions

How do I know what wait to set? Use your product's typical run-out window: how long a single order lasts a customer. Aim to arrive a little before they run out, so reordering feels timely rather than late.

Can I have different timings per product? Yes. Build a separate replenishment automation per product (or product group) with its own wait, and trigger each from the relevant orders.