Inbox Firewall

About

Inbox Firewall analyzes every email you open in Gmail and instantly tells you if it's safe, suspicious, or dangerous.

🟢 Green — legitimate email, no risk signals detected
🟡 Yellow — suspicious signals, proceed with caution
🔴 Red — phishing, spoofing, or malicious links detected

WHAT DOES IT DETECT?

• Phishing domains impersonating well-known brands (paypa1.com, amaz0n.com)
• Spoofing: senders faking their identity using misleading display names
• Malicious links: URLs checked against Google Safe Browsing in real time
• Authentication failures: emails missing proper DMARC, SPF, or DKIM records
• Shortened links: bit.ly and similar services used to hide real destinations
• Urgency patterns: "your account will be suspended", "verify now", "urgent"
• Newly registered domains: a common pattern in phishing campaigns
• Brand impersonation: emails mentioning known brands sent from unrelated domains

HOW IT WORKS

Inbox Firewall combines a rule-based expert engine with machine learning. When you open an email, it extracts the sender, domain, links and visible metadata, and analyzes them in under 2 seconds. A badge appears on screen with the result and an explanation of the risk factors.

PRIVACY

The analysis processes only email metadata (sender, domain, links). It does not read the full email body. Your API key is stored locally in your browser and never shared with third parties.

PLANS

Free: up to 100 analyses per day, completely free, no time limit, no credit card required.
Pro: unlimited analyses, priority support — $1.99/month.

Install Inbox Firewall and stop guessing whether that email is real.