Recipe No. 05 · Scheduling
Class waitlist promotion
When a spot opens in a full class, notify the next person on the waitlist.
- Serves
- Gyms & studios
- Made with
- n8n
- Prep (setup)
- ~90 min est.
- Yield
- 1 hr/week saved, est.
- Level
- Advanced
- Plan needed
- n8n: free to self-host (you pay hosting) or n8n Cloud (paid). Check your plan.
- Est. SMS cost
- Via Twilio: ~$0.0083 per US text segment plus carrier fees, and $1.15/mo per local number (Oct 2026). Other SMS apps price differently, so check your plan.
- TriggerCheck your booking software
- Step 2Otherwise webhook on cancellation → Sheets…
- Step 3Notify first person, mark notified, wait 30…
- Step 4Test with dummy data, then turn it on and…
Ingredients
- Booking tool with webhook/API or Google Sheets
- n8n
- Email/SMS
Editor-reviewedLast checked 2026-10-16v1.0.0 · Free
Steps reviewed against current tool UIs by the editor; not yet run end-to-end in a live account. Time saved is an estimate; results vary. Costs from Axis Consulting and Twilio pricing; check current pricing.
SMS rules: only text people who gave you their number for this purpose, identify your business, and include “Reply STOP to opt out”. US business texting needs A2P 10DLC registration.
Method
- Check your booking software — most have automatic waitlists; use those if available.
- Otherwise webhook on cancellation → Sheets lookup of class waitlist.
- Notify first person, mark notified, wait 30 min, notify next if no confirmation.
- Test with dummy data, then turn it on and review results for the first week.