Authorized senders
See whether a public SPF record identifies the mail services allowed to send for your domain.
EMAIL TRUST MONITOR
Know when your business domain can be impersonated.
Check your SPF, DKIM, and DMARC posture in seconds. Then turn on recurring, supported checks for your verified business domain.
Run a free email trust check
Enter the domain you use for Google Workspace, Microsoft 365, or another business email provider.
No mailbox access needed. This checks public DNS records only.
CONTINUOUS PROTECTION
Keep an eye on the settings that affect trust.
Website & Domain Watch uses GuardHound’s existing domain monitoring to keep checking your domain after you verify ownership. When a supported check finds an actionable email-authentication configuration gap, your alert route gives you a clear next step.
Message authenticity
Check common selectors for a published DKIM record so recipients can verify signed mail.
Spoofing policy
Check whether a public DMARC policy tells recipients how to handle unauthenticated mail.
What Email Trust Monitor does — and does not — do
It checks public DNS and supports recurring monitored checks after ownership verification. It does not protect mailboxes or endpoints, receive or parse DMARC aggregate reports, change your DNS records, or replace Google Workspace, Microsoft 365, or another email provider.
Need help fixing a result?
Use these plain-language guides before changing a record. Start DMARC in monitoring mode and confirm your legitimate senders before moving to an enforcing policy.