MailPosture
Free SPF / DKIM / DMARC Scanner

Are your emails landing in spam?

Scan your domain's email authentication in seconds, get an instant score, and fix issues with copy-paste DNS records -- built for founders, marketers, and agencies.

No signup required. Takes ~5 seconds.

45%+
of business email fails DMARC by default
5 sec
average scan time
100%
free, no signup required

How it works

1. Enter your domain

We look up your SPF, DKIM, and DMARC DNS records in real time -- no installs, no waiting.

2. Get your score

A 0-100 score and letter grade show exactly how protected your domain is against spoofing.

3. Copy-paste the fix

Every issue comes with a ready-to-use DNS record and step-by-step instructions for your registrar.

Everything you need to protect your sender reputation

SPF, DKIM & DMARC in one scan

No more juggling three different tools -- one scan covers every authentication layer plus MX.

24/7 monitoring

We re-check your records every 6 hours and alert you the moment something changes or breaks.

DMARC report analytics

See exactly which servers are sending mail as you, and whether they're passing or failing.

Built for teams & agencies

Monitor up to 50 client domains from one dashboard with client-ready reports.

Frequently asked questions

They're three DNS-based email authentication standards that prove your emails really came from you. SPF lists which servers can send mail for your domain, DKIM cryptographically signs your messages, and DMARC tells receiving servers what to do if a message fails those checks.

Yes. Anyone can run a one-time SPF/DKIM/DMARC scan for free, no signup required. Continuous 24/7 monitoring with alerts is part of our paid plans.

The most common causes are a missing or misconfigured SPF/DKIM/DMARC record, sending from a domain with no DMARC policy, or exceeding the 10 DNS lookup limit for SPF. Run a scan to see exactly what's wrong.

We cache scan results for 24 hours to avoid hammering DNS providers, and store history only for domains you explicitly add to a monitored account.

Yes -- the Pro plan supports 5 domains and the Agency plan supports 50, each with 24/7 monitoring and instant alerts when something changes.

Never get caught off guard again

Get instant alerts the moment your SPF, DKIM, or DMARC records change or break.

See monitoring plans