DMARC Report vs Mail-Tester

DMARC Report processes aggregate and forensic DMARC reports, showing authentication results and sending sources in dashboards. It monitors SPF, DKIM, and DMARC records for changes, failures, and other issues, with alerts by email, webhook, or Slack. Forensic analysis adds per-message details such as sender IP, header information, authentication failures, and receiver disposition. Teams can use it while moving domain policies toward quarantine or reject. The service includes AI analysis, a REST API, and MCP integration for compatible tools including Claude and ChatGPT. MSPs can manage client domains through a multi-tenant portal with white-label reports, role-based access, and bulk onboarding. The free Core plan covers one domain and 10,000 messages per month, with 30 days of history and aggregate reports. Paid plans start at $25/mo; listed plans add message capacity, domains, history, and reporting or access features. The website also offers free checks for DMARC, SPF, DKIM, BIMI, and MTA-STS without signup. Founded in 2014, DMARC Report is headquartered in California.

Mail-Tester checks an email, its mail server, and sending IP, then gives a spam score and reports configuration findings. To run a test, send a message to an address generated by the service and open the result page. Checks include blocklists, SpamAssassin, SPF, DKIM, Sender-ID, DMARC, links, and pictures. The free plan allows three tests within a rolling 24-hour period. A test counts after a new message is sent, the result page is requested, and the result is returned successfully; reopening that result does not use another test. Free results remain available for 7 days. With an account using its own prefix, results remain available for 30 days. Accounts also provide white-labeling, result-page CSS customization, statistics, a 30-day test listing, and pages without ads. Paid plans include an iframe and JSON API for integration; API output can include message details, authentication checks, body analysis, blacklist results, and broken links. One-time test bundles cost $5 as a one-time purchase to $250, paid once; monthly plans cost $10 a month to $250 a month. Passing does not guarantee inbox placement.