Starter

Send a template email in Postmark when a payment fails in Stripe

When a payment fails in Stripe, send a template email in Postmark.

Start the 14-day trial, then find it under Templates → Library. It installs into the client you choose, switched off, with its checklist.

UsesBeta

Every step, in order

When it happens in the first app, the step runs in the second, with the client’s own account.

A payment fails: A Stripe invoice payment attempt declined, or no card on file, within seconds. Once per attempt: Smart Retries can fire it again for the same invoice. The restricted key needs Webhook Endpoints: write.
Send a template email: An email from one of the client’s Postmark templates (a receipt, a booking confirmation), its variables filled from the run. The template must be on the server whose token this is.

Each is the client’s own, stored encrypted and never copied between clients. Until one is added the client’s checklist shows it, and nothing runs.

In the client’s Stripe dashboard: Developers → API keys → Create restricted key. Give it only what the steps need: Customers write, Payment Links write, Prices read, Invoices write, and Webhook Endpoints write for the triggers. Leave “IP access” empty: Thrum has no fixed addresses, so a key locked to IPs fails every call.
Postmark → the client’s server → API Tokens → copy the Server API token. The From address must be a confirmed sender signature or on a verified domain.

It lands switched off. The client’s checklist holds exactly this:

Connect the client’s Stripe, for “A payment fails”
Connect the client’s Postmark, for “Send a template email”
Fill in Postmark: From address (For example hello@northside.example)
Fill in Postmark: Template alias (Postmark → Templates → the template: its alias)

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