Send pre-meeting attendee context with OpenAI, Google Calendar, and Slack

by Satoshi ✓ · 168 views · created 2025-11-23 · Personal Productivity, AI Chatbot

What this workflow does

This AI workflow has 18 nodes and runs on a schedule (every hour). Along the way it connects Gmail, Google Calendar, OpenAI Chat Model and Slack.

How it runs

Trigger: On a schedule (every hour).

1. Check For Upcoming Meetings (Google Calendar): get many
2. Extract Attendee Information (Information Extractor): extracts structured fields from text with AI, with model: OpenAI Model
3. Attendees to List (Split Out): splits a list into separate items
4. Has Email Address? (If): checks a condition and branches into true / false
5. Get Last Correspondence (Gmail): get many
6. Return Email Error (Edit Fields (Set)): sets 1 field: email_summary
7. Has Emails? (If): checks a condition and branches into true / false
8. Get Message Contents (Gmail): get
9. Return Email Error (Edit Fields (Set)): sets 1 field: email_summary
10. Simplify Emails (Edit Fields (Set)): sets 5 fields: date, subject, text…

…plus 4 more steps. See the full node list below.

Services it uses

GmailGoogle CalendarOpenAI Chat ModelSlack

Before you upgrade to n8n 3.0

Nodes used (10)

• Gmailn8n-nodes-base.gmail
• Edit Fields (Set)n8n-nodes-base.set
• Google Calendarn8n-nodes-base.googleCalendar
• Information Extractor@n8n/n8n-nodes-langchain.informationExtractor
• Schedule Triggern8n-nodes-base.scheduleTrigger
• Ifn8n-nodes-base.if
• Split Outn8n-nodes-base.splitOut
• Basic LLM Chain@n8n/n8n-nodes-langchain.chainLlm
• OpenAI Chat Model@n8n/n8n-nodes-langchain.lmChatOpenAi
• Slackn8n-nodes-base.slack

From the author

Overiew This workflow builds an AI meeting assistant who sends information-dense pre-meeting notifications for a user's upcoming meetings. How It Works A scheduled trigger fires hourly and checks for upcoming meetings within the hour. When found, a search for…

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