Email Scam Checker Email Scam Checker

Email Scam Checker: AI phishing & quishing detection extension

An AI email scam checker that catches phishing and quishing (QR code phishing) in real time, right in your inbox — 100% on-device analysis, no cloud processing, no accounts.

Works with:
  • Gmail
  • Outlook
  • Proton
  • Yahoo
  • iCloud Mail
  • Zoho Mail
Add to Chrome
An envelope with three red lines, the extension flagging a message

How It Works?

Install

One click from the Chrome Web Store. No sign-up, no permissions beyond your email tabs.

Open Your Email

Works automatically in Gmail, Outlook, Yahoo Mail, Proton Mail, iCloud Mail, and Zoho Mail. Just browse your inbox like normal.

See the Verdict

A color-coded badge appears on every email — safe, suspicious, or scam. Tap for full details.

Features:

What people are saying about Email Scam Checker

  • Works exactly as it should. Fast, unobtrusive, and really useful for spotting suspicious emails before you interact with them. The QR code scam (quishing) detection is a unique feature I haven’t seen in other extensions.

    Upsala Circus

    Chrome Web Store

  • The quishing (QR code) detection alone is a killer feature - nothing else I’ve tried catches QR phishing this easily. Whole thing runs quietly and catches stuff I’d totally have missed. That said, it’s a safety net, not a license to switch your brain off - still worth a second look before you click anything.

    Pavel Demidovich

    Chrome Web Store

  • Really handy extension. I’ve used it a few times to check emails that looked a bit suspicious, and it’s super quick and easy to use. Definitely gives me some extra peace of mind.

    Vadim Semenko

    Chrome Web Store

  • Great tool, easy to use. You set it up once, and it automatically runs in the background to check the emails you open in your browser. Convenient :)

    Alexei Vetrov

    Chrome Web Store

  • Super convenient and simple extension! The best one I’ve used! I’d love to ask the developer to add iCloud Mail and Zoho support - I’d be so grateful! It’s definitely made checking my emails for scams so much easier.

    Vitalina Makus

    Chrome Web Store

From the Blog

Phishing detection guides, AI security explainers, and honest tool comparisons.

View all articles →
How Phishing Detection Accuracy Is Actually Measured
AI Security

How Phishing Detection Accuracy Is Actually Measured

A vendor's accuracy number is measured on a dataset you have never seen. Here is how to read it, and what we found when we measured our own detector.

13 min read
How Machine Learning Detects Phishing Emails
AI Security

How Machine Learning Detects Phishing Emails

What a phishing detection model reads, why its confidence score is not a probability, and where it misfires - from the developer who shipped one.

11 min read
Spear Phishing vs. Phishing: What's the Difference?
Phishing Detection

Spear Phishing vs. Phishing: What's the Difference?

Spear phishing targets a specific person or small group, while mass phishing is a broad net cast at thousands. Here's how to tell them apart.

9 min read

Frequently Asked Questions

Yes — all analysis runs 100% in your browser. The message body is never sent to a server for the AI to read, and a short record of each scan is kept in a private store tied to your installation. Even the AI model runs locally via ONNX.

Gmail, Outlook, Yahoo Mail, Proton Mail, iCloud Mail, and Zoho Mail. Automatic detection on all six platforms.

Partly. It reliably catches the patterns the model was trained on — including AI-written phishing that slips past grammar- and urgency-based rules — but it reads text only, so it can't weigh sender history or context the way a careful person can. Its published benchmark score (99.58%) is mostly URL samples rather than emails; on that benchmark's email samples we measured roughly 99% of phishing caught and about 3% of legitimate mail flagged. A strong hint, not a verdict.

No — the message body is never sent to a server for the AI to read. Unlike most AI checkers that use Claude/Gemini/OpenAI APIs, Email Scam Checker runs the AI model entirely on your device. A short record of each scan is kept in a private store tied to your installation.

Check the sender address, hover over links, look for urgency language. Or install Email Scam Checker — it automatically checks all 9 red flags + runs an on-device AI deep scan.

Yes. It decodes QR codes inside emails — including those hidden in attached PDFs — and runs the decoded destination through the same link checks as a normal link, so a quishing link can't hide inside an image.

Phishing is a scam that impersonates a trusted sender or brand to trick you into handing over passwords, card details, or money. It usually arrives as an email or text with a link to a fake login page.

A phishing scam is a fraudulent message that pretends to be from a real company or person to steal your credentials or payments. It leans on urgency and lookalike pages to make you act before you verify.

Spear phishing is a targeted phishing attack aimed at one specific person, using their name and personal details to look convincing — unlike mass phishing sent to thousands at once.

Quishing — short for QR code phishing — hides a malicious link inside a QR code, so the destination stays hidden until you scan it. Email Scam Checker decodes QR codes in emails and checks the hidden link just like a normal one.

Yes. A QR code can open a fake login or payment page, or start a malware download. The code itself is harmless — the destination it hides is the risk — so preview the URL and verify the source before scanning anything unexpected.

Don't scan QR codes from unexpected emails, texts, or packages; preview the URL before opening it; and type a company's address directly instead of scanning a payment code. Email Scam Checker decodes and checks QR codes in your inbox before you ever scan them.