Sending Domain Audit

Check whether a domain is actually configured to reach an inbox — SPF, DKIM, DMARC, MX and the enforcement rules Google and Microsoft now apply.

🔒 Runs in your browser. Public DNS lookups only, nothing is stored or sent to a server.

Domain

DKIM selector (optional)

Leave the selector blank and it will try 20 common ones (Google, Microsoft, HubSpot, Mailchimp, SendGrid, Smartlead, Instantly and others). If your provider uses a custom selector, enter it to check directly.

What this checks and what it can't. It reads public DNS: MX, SPF, DMARC, DKIM (by selector), MTA-STS and BIMI. It cannot see your actual complaint rate, your bounce history, or your sending reputation — those live inside Google Postmaster Tools and Microsoft SNDS, and they are what ultimately decide whether you land. A clean DNS setup is necessary, not sufficient.

Built by Vladimír Bojo at Quiet Pipes — we build the data layer under B2B outbound: enrichment waterfalls, lead scoring, CRM sync, sending infrastructure. vladimir@quietpipes.com

Also free: Lead List Triage — deduplicates and scores a contact list in your browser.