Grade assignments and email feedback with OpenAI, Google Drive, Sheets, Gmail and Telegram

by Rahul Joshi ✓ · 165 views · created 2026-08-16 · Document Extraction, AI Summarization

What this workflow does

This AI workflow has 17 nodes and runs on Google Drive events (file created) (plus 2 other triggers). Along the way it connects Slack, OpenAI, Google Drive and Google Docs and 3 more.

How it runs

Trigger: On Google Drive events (file created) (plus 2 other triggers).

1. Google Drive: download
2. Google Sheets: uses Google Sheets
3. Slack: uses Slack
4. OpenAI: uses OpenAI
5. Code: runs custom JavaScript code
6. Code: runs custom JavaScript code
7. If: checks a condition and branches into true / false
8. Google Docs: get
9. Gmail: uses Gmail
10. Telegram: uses Telegram

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

Services it uses

SlackOpenAIGoogle DriveGoogle DocsGoogle SheetsGmailTelegram

Before you upgrade to n8n 3.0

Nodes used (12)

• Error Triggern8n-nodes-base.errorTrigger
• Slackn8n-nodes-base.slack
• OpenAI@n8n/n8n-nodes-langchain.openAi
• Google Drive Triggern8n-nodes-base.googleDriveTrigger
• Google Driven8n-nodes-base.googleDrive
• Coden8n-nodes-base.code
• Google Docsn8n-nodes-base.googleDocs
• Google Sheetsn8n-nodes-base.googleSheets
• Schedule Triggern8n-nodes-base.scheduleTrigger
• Ifn8n-nodes-base.if
• Gmailn8n-nodes-base.gmail
• Telegramn8n-nodes-base.telegram

From the author

Quick overview This workflow watches a Google Drive folder for new PDF submissions, extracts text and grades each assignment with OpenAI using a Google Docs rubric, logs results to Google Sheets, emails feedback via Gmail, and sends a daily summary to the…

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