Enter your domain. We look up its SPF record, show the exact string, and flag the issues that get mail rejected: no record, too many DNS lookups, or a missing -all hard fail. No signup, no email required.
SPF lists your senders, but DKIM signs each message and DMARC tells receivers what to do when they fail. The full audit checks all four plus TLS, reverse DNS and blocklists.
Run the full free auditNot sure what to write? Generate an SPF record → · Prefer to read first? SPF vs DKIM vs DMARC · How to create a DMARC record · DKIM checker · Check all four records · MX checker · IP blocklist checker · Email header analyzer · Cold email deliverability checker