This n8n workflow automates the process of creating and sending voice reminders for upcoming appointments from Google Calendar, integrated with OpenAI for message generation and Elevenlabs for speech synthesis. It is triggered on a schedule to check for appointments within the next two days, then composes a professional reminder message using AI, converts it into a voice message, and sends it via email to the attendee. Additionally, the workflow includes helpful sticky notes with setup instructions for API credentials, making it a comprehensive solution for automated appointment reminders.
Here’s a breakdown of the workflow:
1. The process begins with a Schedule Trigger node that activates the automation periodically.
2. It then fetches upcoming Google Calendar appointments using the Google Calendar node, limited to the next two days.
3. The appointment details are passed to a create message node, which uses OpenAI’s language model to generate a structured, professional reminder message based on appointment data.
4. This message is parsed with a Structured Output Parser to ensure a clean format.
5. The text message is sent to Elevenlabs API to convert it into an MP3 voice file, with a filename dynamically created from the email subject.
6. The generated audio is then attached to an email sent via Gmail API to the appointment attendee, forming a vocal reminder.
7. Sticky notes are included to guide setup for Google API credentials, Elevenlabs API key, and other configurations.
This workflow is ideal for real estate agents, service providers, or any business that needs to deliver timely, automated voice reminders for scheduled appointments, enhancing customer engagement and reducing missed bookings.
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