Something feel off? Check a message, email, screenshot or PDF. See the warning signs, the evidence and what to do next.
Paste text, or add a screenshot or PDF.
Nothing you paste here is stored unless you choose to share the result.
Extract PDF text, read QR codes and uncover hidden characters or instructions buried in an email.
Compare links with threat databases, domain history and real brand websites. Check lookalikes and redirects too.
See the warning signs and what to do next, with the evidence behind the result. If we’re unsure, we say so.
No checker can promise a message is safe. We show the evidence and say when we’re unsure.
83/83 synthetic tests passedInvented cases, not a claim about real world accuracy.Choose a format. Move the divider to see the details that deserve a second look.
Illustrative examples. To try the real checker, use a sample above.
We’ve noticed unusual activity on your account. Please verify within 2 hours1 to keep your access.
Review your account
account-restore.help2
A short deadline pushes you to click before you think.
A convincing display name cannot prove who sent an email.
Open the service’s app yourself. Check your account there.
Invented example. Check your own message ↗
Five made up messages, written the way the real ones are. Some are scams, some are genuine. Make the call, then see what gives each one away.
Send it to redflag@homingbox.net. Get the evidence back in a reply, attachments included.
Open your email appRight click a message → Apps → Red Flag this. Or use /redflag. The result is private until you choose to warn the channel.
Forward a message, screenshot or PDF to the bot. In a group, reply to a message with /check and if it looks like a scam, the whole group gets the warning.
Add Red Flag to your home screen. On Android it then shows up when you tap Share on a message or a screenshot, so a check is two taps away.
Android: tap Install, or open the browser menu and choose Add to Home screen. iPhone: in Safari, tap Share, then Add to Home Screen. iPhones don't let web apps receive shares yet, so paste the message in.