Shopper ID recognizes anonymous US shoppers on your store and sends verified emails to your Klaviyo flows, so abandoned carts and browse sessions turn into revenue.
Shopper ID is the next version of the product that started as GetEmails and became Retention FLEX.
event: shopper.identified email: marco.r***@gmail.com (verified, risk A) pages: /products/linen-camp-shirt, /cart visits this month: 2 → added to "Abandoned Cart (Shopper ID)"
For DTC and ecommerce brands
Bigger abandoned-cart flows
Trigger your existing Klaviyo flows for shoppers who left without signing in or giving an email.
Know who browsed
See every identified shopper with the pages they viewed and how often they came back, and export the list any time.
Protect your sender reputation
Every email is checked against our suppression list and carries a risk grade, so you can keep risky addresses out of your flows.
- 01
Add the tag
Paste one script into your Shopify theme, or into the header of any other store platform.
- 02
Connect Klaviyo
Add your Klaviyo private key. Each identified shopper arrives as a profile plus a "WhoLayer Shopper Identified" event you can trigger flows from, filtered by the pages they viewed.
- 03
Measure it in Klaviyo
Build flows on the WhoLayer event and compare their revenue in Klaviyo's own reporting.
- Charged once a month per shopper
- Repeat visits by the same shopper in a month are free, and opted-out people are never returned or charged.
- Page-based routing
- Send shoppers who viewed checkout, cart, or specific collections to different destinations.
- Monthly spend cap
- Set a hard limit on what you spend each month so volume and cost stay predictable.
- Consent records
- Every contact carries a source and timestamp, so you can answer any compliance question.
- Klaviyo
- Shopify (theme tag)
- Signed webhooks
- Meta Custom Audiences (coming soon)
- Google Customer Match (coming soon)
- Attentive (coming soon)
Is it legal to email these shoppers?
In the US, CAN-SPAM allows commercial email without prior opt-in as long as you identify yourself, include a working unsubscribe, and honor opt-outs. Every Shopper ID email also passes our suppression checks. Outside the US, Shopper ID is off.
Will this hurt my deliverability?
Every address carries a risk grade, and opted-out people are never returned. We recommend using Shopper ID contacts in triggered flows, not mass campaigns, and starting with your highest-intent pages.
How is this different from a pop-up?
Pop-ups capture the few shoppers who opt in. Shopper ID reaches the much larger group who browse and leave without giving you anything.
Ready when you are
Install one tag. Your first 100 identified people are free, no card needed.