SignalBridgeThe two sides
BigCommerce
In Script Manager create a script with the location set to all pages, paste your SignalBridge snippet, and make sure the store uses Optimized One-Page Checkout so scripts can load on checkout and the order confirmation page. Connect your ad platforms, place a test order, and check that one Purchase appears with the right value. If the total is missing, send the order yourself with sb_track from an order confirmation script.
Read the BigCommerce referenceKlaviyo
Create a private Klaviyo API key with Accounts Read and Events Write access and paste it into SignalBridge. Events that carry an email address, phone number or external ID are sent to Klaviyo as metrics named, for example, Placed Order - SignalBridge SS, with order value, items, addresses and campaign details. Events without any profile identifier are skipped, and consent is respected.
Read the Klaviyo referenceThis pairing does not have a step-by-step guide of its own yet. The two references above cover the connection, the events and the limits for each side.