Free tool · No account · Instant results
Free Email Deliverability Audit — 20 checks in seconds.
An email just landed in spam and you want to know why. Paste its raw headers or upload the .eml file. Twenty checks run across SPF, DKIM and DMARC, DNS, your domain's health, Gmail and Yahoo requirements, and content, and you get a score with the first thing to fix. Free forever.
- SPF / DKIM / DMARC
- From Alignment
- DMARC Policy Strength
- PTR / Reverse DNS
- Domain Age
- MX Record Health
- IP Blacklists (15 RBLs)
- SenderScore
- Gmail Feb 2024 Requirements
- Yahoo Requirements
- List-Unsubscribe
- One-Click Unsubscribe (RFC 8058)
- SpamAssassin Score
- Subject Spam Triggers
How to get your email headers: In Gmail, open the email → click ⋮ (More) → Show original. Copy everything from the top down to the first blank line. In Outlook, open the email → File → Properties → Internet headers.
Paste your email headers or upload an .eml file
Get your full email in your inbox, then copy the raw source. Gmail: ⋮ → Show original. Outlook: File → Properties.
Tip: Ctrl+Enter to run
Emails in spam right now?
Find out why in the next two minutes.
Paste the headers of one email that landed in spam. You get the reason Gmail or Outlook filed it there, and the first thing to fix.