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Built an AI-powered invoice and receipt processing system using Telegram, OCR, OpenAI, and Supabase. The workflow automatically extracts invoice data from images/PDFs, stores it in a database, and enables natural-language financial queries via chat.
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AI Email Automation with n8n and Google Gemini
An AI workflow that reads every incoming email, sorts it into 6 categories, and takes the right action automatically.
The problem: businesses lose time and leads because customer emails are mixed with promotions, job alerts, and security emails.
What I built:
Gmail Trigger that picks up each new email
AI Text Classifier (Google Gemini) with 6 categories: Security Alert, Promotions, Jobs, Personal, Payments, and Client Inquiries
Automatic Gmail labels for every category
Google Sheets log for jobs, leads, and payments
AI information extraction for client emails (name, phone, service, budget)
AI-written reply drafts for client emails, saved as drafts so a person approves every reply
Instant Discord alerts for security, payment, and client emails
Tools: n8n, Google Gemini, Gmail, Google Sheets, Discord
This project is a working demo built on my own inbox. The same system can be adapted to any business email, such as travel agencies, event venues, stores, recruiters, and consultants.
Impressive workflow! I especially like the human approval step for AI-written replies. Automation with the right oversight makes a real difference. 🙌
Zaoyu (䲃魚) · SHC-11/36 🐟✨
Which do you prefer — Foil Card 🃏 or 3D Render?
4 voted
57%
3 voted
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Closed
How you reach to this level Vikiiing I see some of your work and that's stunning keep going legend🔥🔥🔥🔥
My first n8n template is now live in the official n8n library, and it is free to use.
After a sales call, most people either rush the follow-up email or forget it. This workflow does the first draft for you.
When Fireflies finishes transcribing a call, it:
pulls the full transcript
uses OpenAI to write call notes: a summary, open questions, the next step and the outcome
saves a follow-up email to the contact as a Gmail draft
logs the call in Google Sheets and emails you the notes
Nothing is sent to the contact automatically. The follow-up waits in your drafts until you check it and press send.
Works with the free Fireflies plan and n8n Cloud.
Get it here: https://n8n.io/workflows/20963
Congrats on getting it approved. Drafting instead of auto-sending is the right default. One edge case worth a guard: calls where the transcript comes back empty or cut short, otherwise the model writes a confident follow-up from almost nothing.