How it works
Email DNS & Deliverability Toolkit is designed to give you the result immediately. The calculation or processing happens on your device for this tool, so normal use does not require an account or a file upload.
Privacy
This tool is marked offline-capable. Your inputs are used in the current browser/app session and are not required to be sent to Wiunix Tools to perform the operation.
Audit, explain and build advanced email authentication/deliverability DNS policy
Audit live MX/SPF/DKIM/DMARC/MTA-STS/TLS-RPT/BIMI records, expand recursive SPF include/redirect trees, count lookup-triggering terms, detect loops/conflicts and inspect DKIM key tags/size/revocation state.
Resolve current include/a/mx SPF paths into an IP-only flattening preview with staleness warnings, probe an explicit DKIM-selector candidate list, parse DMARC rua/ruf mailto URIs, simulate strict/relaxed SPF/DKIM alignment using Public Suffix data, and build SPF/DMARC/MTA-STS/TLS-RPT/BIMI output.
- Recursive SPF tree + lookup limit + resolved flatten preview
- DKIM selector helper + public-key inspection
- DMARC rua/ruf parsing + strict/relaxed alignment simulator
- Conflict warnings + MTA-STS / TLS-RPT / BIMI builders