Kartra

What This Integration Enables

Kartra bundles the funnel, the email sequences, and the membership site into one machine, and the machine runs on two inputs: what a lead's record says, and which tags it carries. Businesses that sell only through Kartra's own checkout get those inputs for free. Everyone else, selling through Shopify, Stripe, webinars, or a sales team, has a gap between where money changes hands and where access and automation live. FlowRunner agents close that gap, with the one write that gives away the product held behind a human gate. - Create or update leads whenever a form is submitted or an order is placed anywhere in the stack - Tag and segment contacts to drive Kartra automations and email sequences - Subscribe contacts to mailing lists and nurture sequences - Grant membership site access after a verified purchase or approved manual enrollment - Look up a lead's full profile, tags, lists, and memberships, before taking further action Tags in Kartra are automation triggers, and memberships are the product itself. Both writes get the respect they deserve through FlowRunner's [human-in-the-loop](/concepts/human-in-the-loop) discipline. Email-keyed identity is the quiet advantage here. Because Kartra resolves every lead by email address, FlowRunner flows never juggle foreign IDs between systems: the same address that identifies the customer in Stripe, Shopify, or a form response identifies them in Kartra, and Create Lead's built-in upsert behavior means repeated events converge on one record instead of manufacturing duplicates. Sync logic stays simple, and simple sync logic is the kind that still works a year later.