✉️ AI-Powered Spam Filtering for Postfix
Stop spam before it hits your inbox — with the help of ChatGPT
We’ve built an advanced spam filtering solution that integrates directly with Postfix and uses the ChatGPT API to classify incoming emails in real time.
💡 How It Works
For each incoming email, our Postfix extension sends the message content to ChatGPT, which returns a classification — spam or not. Based on this:
☠️ Spam messages are bounced immediately with a
550 spam detected
✅ Legitimate emails are accepted as usual.
This bounce mechanism ensures that senders know their email was not delivered — unlike silent spam folders.
🧪 Test Mode Available
In trial mode, spam messages can be tagged instead of bounced, so you can review and tune the filtering safely.
🚀 Proven Results
We’ve been running this system since early 2024 in live environments — and it works:
Spam volume reduced drastically
No extra latency for incoming email
Seamless integration with existing Postfix setups
No need for large signature databases or external spam appliances
🤝 Available for Business Use
Interested in using AI-based spam filtering with bounce detection for your organization?
We offer this solution to other companies and hosting providers.
📬 Contact us at yo@xobi.ai to learn more.