DomainGuard stops staff signing in to Slack, Salesforce and other SaaS tools with the wrong email domain or a personal Google or Apple account. Deploy in minutes via Intune or Group Policy — no user action required.
DomainGuard is built by a UK IT security practitioner who deploys Intune and Group Policy for a living. It collects no browsing data, passwords or email content — only rule-match events for your audit log.
No complex configuration. No end-user training. Just deploy and go.
Create your organisation, define which email domains are allowed on which sites. Takes less than 5 minutes.
Push the extension silently to all managed machines using your existing MDM. Users don't need to do anything.
The extension detects login forms, enforces domain rules, blocks social logins, and logs every event.
When an employee visits a login page, DomainGuard instantly checks the URL against your policies and guides them to use the correct corporate domain.
Built for enterprise IT administrators who need control, visibility and simplicity.
Allow multiple approved domains per site. Users can use any approved domain, wrong ones are blocked instantly.
Core featureAutomatically block "Continue with Google", "Sign in with Apple" and other social login buttons on matched sites.
SecurityDeploy to your entire fleet using Microsoft Intune or Group Policy. Employees never see an install prompt.
Enterprise readyEvery rule match, policy sync, and auth event is logged with timestamps and machine identifiers for compliance.
ComplianceRules update automatically every 15 minutes. Change a policy and it rolls out to every device within minutes.
Cloud nativeAdmins sign in with their existing Microsoft 365 accounts. Works with any Azure AD tenant out of the box.
SSOUnlike proxy-based solutions, DomainGuard enforces policy inside the browser. No SSL inspection, no performance impact, no compatibility issues with modern SaaS apps.
Privacy firstGood — keep it. TRv2 controls which Microsoft tenants your users can reach. DomainGuard covers the logins it doesn’t: non-Microsoft SaaS like Slack, Salesforce and Zoom, plus “Continue with Google / Apple” buttons — without a proxy or SSL inspection.
Start with a 14-day free trial. No credit card required. Microsoft 365 admin sign-in included on every plan.
Set up your first rules in five minutes and see enforcement on a test machine before you roll out.
No credit card required · Cancel anytime · Setup in 30 minutes
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