A no-show for a 2-hour service call costs you real money. You burn the drive time, the slot sits empty, and usually it was a customer who meant to cancel and never got around to it. Most no-shows happen because nobody reminded them. This automation fixes that without adding anything to your plate.

The workflow checks your Google Sheet every 15 minutes. Any appointment coming up in the next 24 hours gets an email reminder. Any appointment 2 hours out gets an SMS. A flag written back to the sheet after each send means the workflow can run all day without double-messaging anyone. No manual work, no cron job to babysit.

The package includes the n8n workflow JSON, a step-by-step setup guide, and a limb spec for integration teams. Setup takes about 20 minutes. You need a Google Sheets account with Gmail, a Twilio number, and a self-hosted or cloud n8n instance.