SiteKensa｜Free diagnosis of SPF, DKIM, DMARC and DNS

SiteKensa is a web service that diagnoses the configuration status of sites and domains, and then presents the next steps to take as procedures. Rather than stopping at diagnosis, it identifies the email infrastructure and DNS management service provider in use, and provides guidance on which management screen to access and what to add there. Development began on July 25, 2026, and it was released on July 28. In addition to diagnosis, it includes 36 pages of provider-specific guides, 24 pages of email infrastructure guides, and 11 explanatory articles. Entered domain names are not stored on the server.