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Upstack Data

Loop Subscriptions to Klaviyo

Forward every Loop Subscriptions event to Klaviyo server-side, resolved to a person against a 750M+ device graph — so flows trigger on a known profile rather than an anonymous session.

What changes

What changes when Loop Subscriptions feeds Klaviyo.

Recover carts you couldn’t email

Anonymous browsers are resolved to a known profile, so abandonment flows can trigger for visitors Klaviyo never identified.

Profiles, not sessions

Events arrive attached to a resolved customer, so flow logic and segmentation work on a person.

Every event, server-side

Storefront and checkout events are captured from Loop Subscriptions on the server, independent of the browser.

One setup, every destination

Connect Loop Subscriptions once and forward to every ad platform, email tool and warehouse you run.

What actually moves

What Loop Subscriptions carries, and what Klaviyo needs.

Loop Subscriptions and Klaviyo describe a customer with different vocabularies. This is the mapping Upstack applies on the way through — the left column is what Loop Subscriptions can put on an event, the right is what Klaviyo can actually use.

Loop Subscriptions sends

subscription_id
the Loop subscription across its whole life
email / phone
subscriber contact
event_type
renewal, swap, skip, pause, cancel or save
line_items
products after any swap
total / interval
charge amount and billing cadence
customer_type
new or returning, resolved before send

Klaviyo receives

email / phone
the profile key — no profile, no send
external_id
tie a browse to a known person
$value
flow and campaign revenue attribution
event properties
what the flow branches on

Sending you can audit

How you know it is working.

Messaging mistakes are expensive and public. These controls exist so a flow never fires against a profile that should not have received it.

  • Per-profile inspection

    Trace any event to the profile it resolved to, and see why.
  • Deduplication

    One order produces one event, so a single purchase cannot trigger the same flow twice.
  • Bot and fraud filtering

    Automated traffic never becomes a profile, so list quality and deliverability are not paying for it.

Where to check in Klaviyo

KlaviyoAnalyticsMetrics. The event appears as its own metric, and the profile count on it is the number you were losing before.

Get Loop Subscriptions talking to Klaviyo.

A 15-minute walkthrough of this connector on your own account.