The offer record connects the stack
Use Offers to define the product, price, checkout mode, invoice, and automation context before Substack and ActiveCampaign receive events.
Integration pair
Substack + ActiveCampaign
Use Substack and ActiveCampaign together with Plandalf as the layer that ties checkout, payments, invoices, integrations, and lifecycle automation together.
Common setup
Most teams use Substack as their email layer and ActiveCampaign as their email layer, with Plandalf in the middle handling the checkout, Offers, invoices, integrations, and the events that fire after a purchase.
See Substack and ActiveCampaign docs for connection details.
Product surfaces behind this integration
This legacy integration URL now points builders toward the same product reality as the canonical app-pair guide: Offers, payment options, invoices, integrations, Automations, API docs, and webhooks.
Purchase automation carries the details
Automations and webhooks let Substack and ActiveCampaign receive buyer, product, payment, invoice, coupon, and deadline context.
Integration settings remain visible
Confirm Stripe, PayPal, TaxJar, Avalara, and test-mode routing before sending the Substack and ActiveCampaign path live.
Use the richer guide from here
Keep moving from this page into canonical integration docs, platform pages, stack guides, and sequence recipes so every Substack or ActiveCampaign mention has a useful next step.
Open canonical app-pair guide Use the richer Substack and ActiveCampaign implementation guide. Substack platform page Roles, capabilities, and setup notes for Substack. ActiveCampaign platform page Roles, capabilities, and setup notes for ActiveCampaign. API-first stack SDK checkout, API keys, webhooks, payment processors, and invoices.