Problem
I needed a paid subscription where the payment issues a one-time activation code for a booking app, without adding a separate email service.
What I built
- One HighLevel product with three monthly prices.
- A small app that issues the code from a payment webhook and checks a shared secret on every call.
- A HighLevel workflow with a custom webhook for each price. It saves the webhook's response to a contact field, and the email reads the code from that field.
- A 60-minute session calendar.
Stack
- HighLevel products and workflows
- HighLevel custom webhooks
- HighLevel AI Studio
- HighLevel calendars
Outcomes
- Live since October 2026: a payment in HighLevel issues a one-time code that unlocks the booking app.
- HighLevel does the sending, so no separate email service or automation platform is needed.
This one is about the build. No customer results are claimed.