Agari Brand Protection vs.
Open-DMARC-Analyzer in 2026

Agari grouped Microsoft 365 and Google Workspace under recognizable corporate mail, then separated SendGrid and Mailchimp enough for us to attach marketing owner notes. The support desk sender appeared as a third-party source instead of a raw IP cluster, and the unauthorized spoof sample triggered a higher-signal alert. On the SPF pass with visible from mismatch, the product made the domain match failure visible and tied it to policy movement instead of treating it as a generic pass.

Open-DMARC-Analyzer showed aggregate results once parsed data reached the database, including SPF and DKIM pass fields for Microsoft 365, Google Workspace, SendGrid, and Mailchimp. It exposed the DKIM pass on the marketing subdomain, but the service naming, owner assignment, and unknown sender classification stayed manual. The spoof sample appeared through failing authentication and disposition data, yet there was no guided path for deciding whether the parked domain was ready for reject.

Onboarding the primary corporate domain, marketing subdomain, and parked domain in Agari took more planning, but the DNS checklist and sender review flow reduced uncertainty. The unknown sender was easier to isolate because it sat next to known Microsoft 365, Google Workspace, SendGrid, Mailchimp, and support desk traffic. When the forwarded mail case failed SPF, Agari kept the failure tied to forwarding context instead of making us infer it only from raw authentication results.

Open-DMARC-Analyzer felt simple after the parser and database were running, but the first-use experience was mostly infrastructure work. The three domains appeared in the dashboard once data arrived, but the unknown sender stayed as IP and hostname research. The forwarded SPF failure was visible in the report data, yet the product did not explain why forwarding broke SPF or how that should affect policy movement.

During setup, Agari's materials gave DNS record change steps and a handoff path for the primary domain. Escalation was available but formal; we had to package evidence around the support desk sender and spoof sample before the next response. Enterprise onboarding made sense for a security program, less for a small team that just wants to classify one unknown sender.

Open-DMARC-Analyzer followed the open-source support model during our test. DNS setup, parser maintenance, database access, TLS, backups, and security patching were our responsibility. There was no commercial escalation path for explaining the forwarded SPF failure or deciding how to move the parked domain toward reject.

Agari handled domain grouping well for the primary domain, marketing subdomain, and parked domain, and it suited an enterprise security team with formal reporting cycles. Account separation existed, but client-style handoff notes took more work than an MSP would want across many small customers. Recurring reporting was strong for executive summaries, while day-to-day marketing sender ownership still needed manual coordination.

Open-DMARC-Analyzer fit a technical SMB that wants a self-hosted view of aggregate DMARC data. It did not give us tenant separation, client grouping, recurring reporting, or guided handoff notes for MSP work. For an enterprise, the lack of alert routing and support escalation made it useful as a data viewer, not as the system of record for enforcement.