01 / EMAIL DIAGNOSTICS

Email Diagnostics

Email Diagnostics is a utility operated by Alchemail that reads the public DNS configuration of a sending domain and inspects email headers you supply. It reports on how records like SPF, DKIM, and DMARC are configured and summarizes the claims present in the headers you provide. Public DNS queries are resolved using Cloudflare DNS. The tool describes configuration and header claims; it does not test, measure, or guarantee inbox delivery, and it does not perform cryptographic DKIM signature verification. Questions go to arthur@alchemail.io.