High-Value Square Customers Unengaged on Email, broken down by row.
At a glance
A cross-platform revenue-at-risk audit. It cross-references your highest-spending customers in the Square Customers Directory against engagement in your email platform (Klaviyo, Dotdigital, Mailchimp, or similar) and lists the top spenders who are either not in the email audience at all or have gone cold (no opens or clicks in the window). These are proven buyers you are failing to retain through your cheapest channel.
Calculation
Calculated automatically by cross-referencing your Square Online data against your connected email platform. See the At a glance summary above for what the metric tracks and the worked example below for a typical reading.Worked example
A US specialty wine shop on Square. One store plus a Square Online storefront for club shipments and gifting, with Klaviyo as the email platform. The audit is reviewed on the morning of 14 Mar 26. Each row is a flagged high-value customer.
Three things to notice:
- The flag has distinct root causes that need different fixes. customer A has an email in Square that never reached Klaviyo, a sync or consent-mapping gap. customer C has no email on the profile at all, a POS capture gap, fix it at the register and via Customer Capture Source (POS vs Online). customer D opted out, which is a permission reality, not a sync bug. Reading the flag reason column tells you which playbook to run.
- Exposure is sized by Square spend, not by count. 24 customers sounds small, but the top five alone represent over $26,000 of proven lifetime spend. Work the list top down by spend, the highest-value lapses are the most urgent and the most reactivatable.
- This crosses the 20-customer alert threshold. With 24 flagged, the Vortex IQ Nerve Centre alert fires. Pair with Email Opted-In Customers to see the directory-wide opt-in gap and Square Orders to Email Attribution to see the revenue your email programme is and is not influencing.
Sibling cards merchants should reference together
Reconciling against Square
Where to look in the Square Dashboard: Square Dashboard, Customers, Directory. Sort by spend to find your top customers, and open each flagged profile to confirm itsemail_address and creation_source. Square’s customer Insights and groups can isolate high spenders, but Square alone cannot tell you whether a customer is engaged in your email platform, that is the cross-platform half of this card.
Other Square Dashboard views that look like the same issue but aren’t:
- Customers, Directory sorted by spend: confirms who your top spenders are and whether they have an email on file. This is the Square half of the join.
- Customer groups (for example “spent over $500”): a useful way to define high value, but it has no email-engagement dimension.
- Marketing audience size: shows who is eligible for a Square campaign, not who is cold in an external email platform.
- Customer Insights: behavioural summaries, not per-contact email-engagement status.
Cross-connector reconciliation:
The Square owned-audience advantage and its catch: Square gives you one customer directory across in-store and web, so you actually know who your high spenders are, including the in-store regulars most platforms never capture. The catch is that knowing them in Square does nothing if they never reach your email platform. This card is the bridge: it turns Square’s owned audience into a concrete, prioritised retention list.
Known limitations / merchant FAQs
What makes a customer “high value” here? Total spend recorded against their profile in the Square Customers Directory. The card ranks customers by spend and assesses the top of that list. Square aggregates spend across in-store and online for the same profile, so a customer who buys mostly in-store still qualifies if their lifetime spend is high. What does “unengaged on email” mean exactly? One of three things: the customer is not in your email platform at all, they are present but unsubscribed or suppressed, or they are subscribed but have not opened or clicked an email in the 90-day window. The flag reason on each row tells you which, because each needs a different fix. Why is a customer with an email in Square flagged as not in the email platform? Because the email never synced or never gained consent in the email platform. This is the most common and most fixable case, a Square profile has the address but it was never passed to Klaviyo, Dotdigital, or Mailchimp, or the consent mapping was missed. Check your Square-to-email-platform sync rules. A flagged customer has no email on their Square profile. What do I do? That is a capture gap, not an engagement gap. The customer spends with you but you have no way to email them at all. Fix it at the point of capture, prompt for email at the register and at checkout, and review Customer Capture Source (POS vs Online) to see how widespread the POS capture gap is. Should I email customers who unsubscribed? No. An unsubscribed contact is flagged here so you understand the exposure, not so you can mail them anyway. Respect the opt-out. For these customers the lever is in-store or a different channel, not email. The card surfaces them so the lapse is visible and not silently written off. Why does the same customer drop on and off the list? Engagement is assessed over a rolling 90-day window. A customer who opens an email moves out of “cold”, and one whose last open ages past 90 days moves back in. Matching is onemail_address, so a typo’d or secondary address can also flip a customer’s status. Deduplicate emails to stabilise the match.
Can I change the threshold or the window?
Yes. The default alert fires above 20 flagged top spenders over a 90-day engagement window. Both the count threshold and the engagement window can be tuned per merchant in your Vortex IQ workspace settings if your programme cadence is different.