PowerDMARC today announced the release of its United States DMARC & MTA-STS Adoption Report 2026, a data-driven analysis examining the current state of email authentication and transport-layer security across U.S. domains. The report analyzes hundreds of domains across major industries to assess the adoption levels of SPF, DMARC, MTA-STS, and DNSSEC. Key Findings from the ReportAccording to PowerDMARC’s United States DMARC & MTA-STS Adoption Report 2026:SPF Adoption: 95.7% of analyzed U.S. domains have SPF records published. MTA-STS Adoption: 1.7% of domains have implemented MTA-STS. Report AvailabilityThe United States DMARC & MTA-STS Adoption Report 2026 is published by PowerDMARC and is now available for download on their website.