The free anti-phishing extension

Phishing lurks.
Bax watches.

Meet MailBoxster Web Security, the free browser extension that helps spot phishing, suspicious pages and hidden traps. Clear alerts. Local analysis.

Install on Chrome Demo

Free at launch. No account needed.

Bax. Your browser’s little bodyguard.

MailBoxster Web Security

Chrome Firefox EdgeSafari Coming soon

Web Security

You browse. It keeps watch.

One automatic protection policy. No security level to choose. URLs, embedded reputation lists and page signals work together.

Explore the extension

Looks beyond appearances

Checks the address and page content for suspicious combinations.

Tells you why

Warns when a situation is uncertain. Blocks when stronger evidence is found.

Leaves room for real life

Safeguards for legitimate brands help reduce unnecessary interruptions.

Demo

Would you have clicked?

Today’s phishing borrows the services you trust. A shared file, a sign-in request, an urgent message. One small detail can change everything.

See the guardian in actionInteractive illustration · no live scan

Bax’s world

Small guardian. Sharp instincts.

Born from the MailBoxster logo, Bax stands for one simple idea: helping you spot the trap before you click. Two yellow eyes. One mission. Your peace of mind.

Enter the world

Evidence

Trust needs evidence.

0 false positives observed

Tranco top 10,000 URL roots tested

No clear slowdown measured

Internal Speedometer browser benchmark

Local analysis

Your browser does the work

Internal measurements, 11 September 2026. Limited test conditions, being expanded. These results do not guarantee detection of every threat or zero future false positives.