How to Tell If an Email Is a Scam (Warning Signs & Free Checkers)
Published 2026-02-11
By Sara Lin, Email Deliverability Researcher
Identify scam emails instantly with these 12 warning signs and free checker tools before you click any links or share any information.
The Most Common Email Scam Types
Email scams have grown increasingly sophisticated. The most common types include:
**Phishing emails** — Impersonate legitimate brands (banks, PayPal, Amazon) to steal login credentials or payment info.
**Business Email Compromise (BEC)** — Fake emails from 'the CEO' or 'the CFO' requesting urgent wire transfers.
**Advance-fee fraud (Nigerian Prince)** — Promises of large sums in exchange for a small upfront payment.
**Lottery and prize scams** — Claim you've won money you never entered to win.
**Tech support scams** — Claim your computer has a virus and ask you to call a number or download software.
**Romance scams** — Build emotional relationships online before requesting money.
Knowing these patterns is the first step in identifying scam emails.
12 Warning Signs of a Scam Email
1. **Urgent language**: 'Act now!', 'Your account will be closed!', 'Urgent response required!' 2. **Suspicious sender address**: The display name says PayPal but the actual email is noreply@paypa1.net 3. **Generic greetings**: 'Dear Customer' instead of your name 4. **Unexpected attachments**: Files you didn't ask for, especially .exe, .zip, or Office documents 5. **Hover-over link mismatch**: The visible link says paypal.com but it goes somewhere else 6. **Grammar and spelling errors**: Professional companies proof their communications 7. **Requests for personal information**: No legitimate company asks for passwords or SSNs via email 8. **Too good to be true offers**: Prizes, inheritances, or unexpected windfalls 9. **Unusual payment methods**: Gift cards, cryptocurrency, wire transfers to unknown accounts 10. **Mismatched branding**: Logo looks slightly off, colors don't match the real company's brand 11. **Spoofed domain**: Check the actual domain carefully — paypa1.com vs paypal.com 12. **Pressure to keep it secret**: Scammers often tell you not to tell family or your bank
Free Tools to Check Suspicious Emails
**Google Safe Browsing**: Paste any link from a suspicious email into Google's transparency report (transparencyreport.google.com/safe-browsing/search) to check if it's known malware or phishing.
**VirusTotal**: Upload attachments or paste URLs to scan against 70+ security tools simultaneously (virustotal.com). Free and requires no account.
**PhishTank**: A community database of phishing URLs. Check suspected phishing links instantly (phishtank.com).
**URLVoid**: Checks URLs against dozens of blacklists to detect malicious sites.
**MXToolbox Email Header Analyzer**: Paste the full email header to trace where an email really came from — exposes spoofed senders.
**Signal Plug Reverse Email**: Search the sender's email address to discover who actually owns that address and whether it's a legitimate business contact.
How to Check the Real Sender of an Email
The most important scam check is verifying the **actual sender email address** — not just the display name.
**In Gmail**: Click the three dots next to Reply → Show original. You'll see the full email headers including the actual From: address.
**In Outlook**: Click File → Properties (in the Message tab). The Internet Headers section shows the full routing path.
**In Apple Mail**: View → Message → All Headers.
After finding the real sender address, check: 1. Does the domain match the company it claims to be? 2. Is the domain a close misspelling of a legitimate brand? 3. Can you find evidence this is a real business?
Signal Plug lets you search any email address to discover who it belongs to and validate it against known business contacts.
What to Do If You Received a Scam Email
**Don't click anything** — no links, no unsubscribe button, no attachments.
**Report it**: - Gmail: Three dots → Report phishing - Outlook: Report → Phishing - Forward to spam@uce.gov (FTC) or reportphishing@apwg.org (Anti-Phishing Working Group)
**Check if you're already compromised**: - Visit haveibeenpwned.com to see if your email was in any data breaches - If you clicked a link or entered credentials, change your password immediately and enable 2FA
**Report financial fraud**: If you sent money as a result of a scam, contact your bank immediately and file a report with the FTC at reportfraud.ftc.gov.
If you're unsure whether an email is legitimate, contact the supposed sender directly through their official website — not through any contact info in the suspicious email.
Topics: email scam, phishing, email security, free email scammer check