See who's sending email as your domain
Mailbox providers like Google, Microsoft and Yahoo send daily DMARC aggregate reports as compressed XML attachments. MailGuard receives them, decodes them and turns them into a dashboard and a weekly email you can read in a minute.
Start a 14-day free trial $7/domain/month
Add mailto:reports@reports.deadlinkpatrol.com to the rua= tag of your DMARC record. Keep your other report addresses; DMARC allows several.
Pass rate, every sending IP with its reverse DNS, which ones pass or fail SPF and DKIM alignment, and which provider reported it. 7, 30 and 90-day views.
Every Monday: messages seen, DMARC pass rate, the top failing sources with a plain-English next step, and when it's safe to move from p=none to quarantine.
How it works
- Enter your domain and email on the start page.
- Update your DMARC record with the value we show you (our free generator can build one from scratch).
- We check the record in DNS and email you a private dashboard link. Reports usually start arriving within 24–48 hours.
What it doesn't do (yet)
MailGuard reads aggregate (rua) reports only. It doesn't process forensic (ruf) reports, change your DNS for you, or send real-time alerts. It's in early access: billing is matched to domains by hand, and questions are answered by email from the people who run it.