Browse Firefox without
looking over your shoulder
AI and machine learning-powered scam, spam, and phishing detection tailored natively for Mozilla Firefox with real-time inbox & webpage analysis.
Native Firefox integration.
Uncompromising privacy.
Built to leverage Firefox's strong privacy standards while delivering instant, AI-driven protection against zero-day scams.
Instant Millisecond Analysis
Receive immediate risk assessments on emails, messages, and websites without slowing down your Firefox tabs.
Webmail Protection
Automatically scans incoming emails across Gmail, Outlook, Yahoo Mail, and Fastmail before you click dangerous attachments.
Color-Coded Badges
Clear visual indicators (Safe, Suspicious, Dangerous) clearly highlight impersonation and deceptive sender addresses.
Zero-Day Scam Detection
Beyond static blocklists: our neural models evaluate linguistic urgency, deceptive homoglyphs, and brand hijacking in real time.
Your All-in-One Safety Toolkit for Firefox
IsThisSpam lives quietly in your Firefox browser until it's needed. When you open a suspicious email or visit a sketchy store, our intelligence engine analyzes the threat instantly.
- Email Fraud & Phishing DefenseFlags deceptive senders, lookalike domains, and urgent payment requests in your webmail.
- Fake Store & Domain Age DetectionChecks brand-new domains, suspicious checkouts, and copycat stores before you enter payment details.
- Dangerous Link ProtectionProtection across social media feeds, search ads, and shortened URLs.
- Local & Private AI OptionsSupports BYOK and local Ollama execution so your content never leaves your machine if you choose.
- Granular Site ControlsEnable scanners only where you want: Gmail, Facebook, Social Media, or All Websites.
Ready to browse Firefox fearlessly?
Install the official Firefox extension today and protect yourself against online fraud.
100% Free to install • Verified on Mozilla Add-ons (AMO)