Offer configuration stays visible
Use Offers to decide what Substack receives: product, price, buyer, checkout mode, invoice, and automation context.
S
What it does
- Publishes posts
- Hosts newsletter pages
- Supports links and buttons
- Supports custom embeds where available
Product surfaces
Where Substack fits in the buying workflow
Integrations work best when the checkout surface, payment state, invoice record, and post-purchase automation all point at the same commercial object. These product screens show the Plandalf controls that should be configured before Substack receives checkout, payment, tax, or workflow context.
Checkout layout and selling blocks stay editable
Before Substack enters the stack, operators still need checkout templates, products, prices, coupons, order bumps, upsells, and branded offer content they can inspect.
Purchase events can start follow-up
Substack should fit into the work after checkout: fulfilment, records, CRM updates, support context, webhooks, and sequences.
The buying surface can live where the buyer is
Substack can start the sale through a hosted checkout, embedded checkout, modal, inline flow, or buy button depending on the stack.
Builder paths
Stack guides that use Substack
Use these stack guides when a builder needs the whole path: sales surface, Plandalf offer, payment handoff, automation, fulfilment, records, and downstream integrations.
Substack stack recipes
Find full stack guides that pair Substack with checkout, payment, automation, fulfilment, records, and downstream integrations.
Offers overview
Use Offers to package products, prices, checkout pages, invoices, coupons, payment options, and follow-up context.
Hosted checkout
Use hosted checkout when Substack should hand the buyer to a branded Plandalf checkout page.
SDK checkout
Use SDK checkout when Substack belongs inside an app, custom site, or API-first stack.
Webhooks
Route checkout events, purchase events, payment state, invoices, and customer context into another tool.
Checkout completed fulfilment
Turn a completed checkout into access, receipts, CRM updates, support context, and records.
Overview
Substack is the audience surface for newsletter operators who want the story, recommendation, or paid product pitch to live inside the post readers already open.
What Plandalf does here
- Product-backed checkout links — send readers from a post, button, or product callout into a Plandalf Offer.
- Checkout and invoice records — keep payment options, buyer details, line items, invoices, and fulfilment context in Plandalf instead of inside a loose payment link.
- Post-purchase handoff — use purchase events to segment buyers, deliver files, invite members, or start follow-up workflows.
Pair it with
Connect Substack with…
Platforms whose roles complement Substack inside a Plandalf sequence.
Substack + ActiveCampaign
Capture a lead on ActiveCampaign, nurture it through Substack.
Substack + beehiiv
Capture a lead on beehiiv, nurture it through Substack.
Substack + Kit (ConvertKit)
Capture a lead on Kit (ConvertKit), nurture it through Substack.
Substack + Customer.io
Capture a lead on Customer.io, nurture it through Substack.
Substack + Drip
Capture a lead on Drip, nurture it through Substack.
Substack + Flodesk
Capture a lead on Flodesk, nurture it through Substack.
Integration methods
How Substack connects to Plandalf
Each method below is the minimum viable setup. Pick the one closest to how you already use Substack with checkout, payments, invoices, webhooks, API work, SDK checkout, and integrations.
- Method 1
Integrate via the Plandalf REST API
Substack doesn't expose a recognized capability above, so wire it up through the Plandalf REST API — POST events in, GET state out.
curl -X POST https://api.plandalf.com/v1/events \ -H "Authorization: Bearer $PLANDALF_API_KEY" \ -H "Content-Type: application/json" \ -d '{"source": "substack", "type": "custom", "data": {}}'
FAQ
Common questions about the Substack integration
Do I need a paid plan to use Substack with Plandalf?
Plandalf itself is free to connect to Substack. You only need a Substack account that allows API access, which is almost every paid plan.
How long does setup take?
Under 10 minutes — paste a webhook URL into Substack, point it at the Plandalf endpoint, and trigger a test event to confirm.
Can I disconnect Substack later without losing data?
Yes. Disconnecting only revokes the credentials — historical events Plandalf fired stay in your sequence logs, and Substack's own records are untouched. You can reconnect any time and resume from the last seen event.
Does Plandalf store Substack data?
Plandalf stores the Substack contact ID and the events Plandalf fired against that contact. Email content stays in Substack; Plandalf doesn't mirror your audience or newsletter archive.
What if my email need isn't covered by the actions or triggers listed here?
Drop into the Plandalf REST API and call Substack directly from your sequence's HTTP action. Anything Substack's public surface exposes is reachable.
Is there a usage limit?
There's no Plandalf-side limit. Substack's own plan limits apply.
Where do I find Substack's own documentation?
Substack's homepage at https://substack.com links to their developer docs. For Plandalf-side questions about the Substack integration, see the Plandalf docs.