Reorder Signal creates calculated B2B reorder events from Shopify order history - missed reorder windows, dropped product lines, basket narrowing, and account drift - so Klaviyo, Shopify Flow, and webhooks can trigger from real buying behavior instead of fixed delays or generic next-order predictions.
A viewed product, abandoned cart, placed order, or cancelled subscription is easy for ecommerce platforms to see.
A missed reorder is different. So is a dropped product line, a narrowed basket, or a high-value account drifting from its normal pattern. Those are buying-pattern changes, not simple customer actions.
Reorder Signal turns those missing B2B behaviors into calculated events your automation stack can use.
They view a product, abandon a cart, place an order, or cancel a subscription. The platform sees the action and creates the event.
Your flow can run.
Revenue can be saved.
They miss a normal reorder, stop buying a regular product line, or quietly narrow their usual basket. The platform does not see the absence.
There is no event.
Revenue is at risk.
Reorder Signal detects when a buyer’s normal pattern breaks and sends a structured event into Klaviyo, Shopify Flow, Slack, HubSpot, or any webhook destination.
New events enable new flows.
B2B reorder risk becomes
actionable.
Shopify has the orders. Platforms like Klaviyo have the flows. Reorder Signal creates the B2B events in between.
It reads each customer’s order history, detects when their normal B2B buying pattern changes, and sends structured events into the automation tools your clients already use.
Customer accounts, products, SKUs, order history, line items, and purchase patterns.
The raw behavior is already there.
Detects missed reorders, dropped product lines, basket narrowing, category spend changes, and account drift.
Historical order data becomes live B2B automation triggers.
Trigger email and SMS flows, sales rep alerts, CRM tasks, Slack notifications, or webhook actions.
The existing automation stack can finally act on B2B reorder risk.
Reorder Signal reads Shopify order history, calculates each account’s normal buying pattern, and sends structured events into Klaviyo, Shopify Flow, or webhooks when that pattern breaks.
Most B2B reorder flows use a fixed delay because that's all the data available to them; the right trigger does not exist. Reorder Signal calculates normal cadence, basket behavior, and product-line patterns from each account's own order history, so the trigger fires when that customer is overdue, not when an arbitrary window expires.
Use calculated B2B events to build reorder recovery, product-line recovery, basket narrowing, and sales-assist flows that match how each account actually buys.
reorder_overdue
Fire when a buyer exceeds their usual reorder window, based on their own cadence, not a fixed delay.
product_line_dropped
Fire when a buyer stops purchasing a product they previously ordered regularly.
basket_narrowing
Fire when a buyer's order range contracts - they're still ordering, but across fewer products or categories than usual.
high_value_account_drift
Route to a sales task, Slack alert, or CRM note when a top account shows any drift signal, before it becomes a lost account.
category_spend_down
Fire when spend in a specific category drops below the buyer's established baseline, even if total order value looks healthy.
winback_candidate
Escalate accounts that have moved past overdue into probable churn, with enough purchase history to make re-engagement worth the effort.
Reorder Signal sends clean event data with the context needed to personalize B2B flows, route high-value issues to sales, and trigger the right follow-up.
product_line_dropped event
{ "event": "RS - Product Line Dropped", "profile": "admin@reordersignalcafe.com", "external_id": "shopify-company-7732", "company_name": "Reorder Signal Cafe", "signal_type": "product_line_dropped", "product_category": "Coffee Beans", "previous_period_revenue": 1840.50, "current_period_revenue": 220.00, "revenue_change_pct": -88.05, "analysis_window_days": 90, "last_order_date": "2026-04-04" }
Reorder Signal supplies the customer-specific reorder event. You build the strategy, copy, segmentation, and flow logic.
Reorder Signal is not for every ecommerce store. It works best where customer reorder behavior is regular enough to model and valuable enough to act on.
Reorder Signal helps Shopify and lifecycle agencies turn B2B reorder recovery into a repeatable client offer, without custom-building the trigger logic for every store.
Whether you run a B2B Shopify store or are a consultant or agency working with wholesale and trade ecommerce clients, Reorder Signal helps turn missed reorder behavior into automation-ready events for Klaviyo, Shopify Flow, and webhooks.