You guys need to look at GReminders - Its got a good Hubspot integration and does ALL this stuff you are commenting about here. Email/SMS/Voice Reminders, Custom Templates, set the schedules (24 hours, 1 weekday, 1 hour, prior, etc…), include zoom/webex/google meet/ms teams links, any language, etc… Hubspot SMS reminders for appointments and Automated Client Scheduling | GReminders