SendForensics vs.
DMARC-SRG in 2026

SendForensics grouped Microsoft 365 and Google Workspace traffic quickly enough for us to separate normal corporate mail from marketing mail, then gave us workable drilldowns for SendGrid and Mailchimp. The SPF pass with visible from mismatch was easy to spot, and the parked-domain spoof sample surfaced as a problem worth investigating, but the product still required us to write the final owner action for the unknown sender.

DMARC-SRG gave us the raw aggregate evidence we needed to inspect DKIM and SPF outcomes, including DKIM pass on a subdomain and forwarded mail with SPF failure. It did not turn Microsoft 365, Google Workspace, SendGrid, Mailchimp, or the support desk sender into an ownership workflow by itself, so classification and next steps lived in our notes.

With SendForensics, adding the corporate domain, marketing subdomain, and parked domain was straightforward once the DMARC rua records were in place. The unknown sender took a few report cycles to classify confidently, and the forwarded mail SPF failure needed manual explanation, but the interface kept those cases visible in one review flow.

With DMARC-SRG, onboarding started with infrastructure rather than a product wizard: PHP, database, mailbox ingestion, cleanup settings, and access control. Once live, the unknown sender was visible in the reports, and the forwarded SPF failure was explainable through raw authentication results, but there was no guided path for turning that evidence into a policy decision.

For SendForensics, the support model made sense for a team that wants help validating DNS setup and interpreting the first reporting cycles. We still had to prepare a clean DNS handoff for the parked domain and marketing subdomain, and enterprise onboarding clarity depended on the paid tier, but escalation had an obvious vendor route.

For DMARC-SRG, support was an operational responsibility. We had to own database setup, mailbox ingestion, UI access, backups, and security maintenance, and the DNS handoff was just our own record-change checklist rather than a vendor-guided process.

SendForensics worked best for the primary corporate domain and marketing subdomain, where recurring reporting and recognizable sender groupings mattered more than raw database control. Agency-tier segmentation helped the MSP-style workflow, but client handoff notes still required work outside the product when we separated approved senders, the support desk, and the parked-domain spoof sample.

DMARC-SRG was a reasonable fit for an SMB or internal operator with a server, database skills, and comfort maintaining ingestion. It was weaker for MSP and enterprise scenarios because account separation, client grouping, recurring reports, and handoff context had to be built around the product rather than inside it.