Stop Business Email Compromise before the wire goes out
Attackers hide forwarding rules in your executives' mailboxes and watch for months. MailBreach finds them in minutes — and auto-removes them with one-click rollback.
Cancel anytime · 15-minute setup
What MailBreach does for you
Detect hidden forwarding rules
Enumerate every mailbox across your M365 or Google Workspace tenant. Find rules forwarding email to external attackers — rules your existing security tools can't see.
Auto-remediate with guardrails
Severity 1 threats are disabled automatically with before-snapshots for rollback, verification, and a complete audit trail. No manual intervention required.
Detect it on day 1, not day 197
Daily scans and drift detection catch new rules the moment they're created. Get alerted before the attacker has had time to act on what they've stolen.
Built for trust
Ready to find what's hiding in your mailboxes?
Connect your tenant and get your first scan in under 15 minutes.
Cancel anytime · 15-minute setup
Common questions
How is MailBreach different from Microsoft Defender?
Defender is excellent at inbound threat detection. MailBreach watches the configuration layer — forwarding rules, inbox filters, posture settings — that Defender wasn't designed to monitor. They complement each other.
Will you delete legitimate email rules?
No. You configure an allowlist of approved domains and addresses. Anything on the allowlist is never flagged. Severity 2 rules always require your approval before any action is taken.
How long does setup take?
Most customers are running their first scan within 15 minutes. M365 requires admin consent (OAuth), Google Workspace requires a service account with Domain-Wide Delegation. Our wizard guides you step by step.
What if a rule is removed incorrectly?
Every remediation captures a before-snapshot. You can restore any rule with one click from the audit log. We also verify the action worked — or didn't — immediately after execution.