01
Looks beyond appearances
Checks the address and page content for suspicious combinations.
Today’s phishing borrows the services you trust. A shared file, a sign-in request, an urgent message. One small detail can change everything.
The free anti-phishing extension
A small addition.
A watchful guardian.
Meet MailBoxster Web Security, the free browser extension that helps spot phishing, suspicious pages and hidden traps. Clear alerts. Local analysis.
Free at launch. No account needed.
02
Tells you why
Warns when a situation is uncertain. Blocks when stronger evidence is found.
See the guardian in action03
Leaves room for real life
Safeguards for legitimate brands help reduce unnecessary interruptions.
Trust needs evidence.Good questions.
Is Web Security free?
Yes, the extension is free at launch. Install it from your browser’s store. No MailBoxster account is required.
Does it protect against everything?
No. Some threats can escape detection or act before a scan. Keep your browser up to date and stay careful with unexpected requests.
What happens to my data?
The extension analyses URLs and page signals locally. Some security settings and events stay on your device. Your data is not sold. Read the privacy policy for details. Privacy
MailBoxster Web Security
Give your next click a guardian.
Free at launch. No account needed.