Test email deliverability in 60 seconds.
Send one email to the address below to instantly check SPF, DKIM and DMARC.
How this email deliverability test works
A fast, three-step flow built for developers and email teams. Nothing to configure beyond sending one message.
Send one email
Send a single email from your ESP or SMTP provider to the generated test inbox.
We analyze delivery
We inspect SPF, DKIM, DMARC alignment and basic spam signals automatically.
Get instant results
See a clear score with pass, warning, and fix recommendations in seconds.
What we check in your email
A concise checklist to surface deliverability risks before you ship.
SPF validation
Sender authorization check
DKIM signature
Message integrity verification
DMARC policy
Alignment and enforcement
Headers & routing
Received hops and headers
Content structure
Plain text, HTML, size
Links & domains
Link count and reputation signals
Unsubscribe headers
List-Unsubscribe presence
Who this tool is for
Built for people who need fast, accurate email deliverability checks.
Developers & SaaS founders
Testing transactional and product emails
Email marketers
Improving inbox placement
Cold emailers
Avoiding spam filters
ESP & SMTP users
Debugging configuration issues
Privacy-first by design
Temporary, private test inboxes with safety controls baked in.
Temporary inboxes auto-expire
Emails are not publicly accessible
No HTML or scripts are executed
Messages are stored only briefly for analysis
No tracking pixels are rendered
Frequently asked questions
Quick answers for common deliverability and usage questions.
Is this email deliverability test free? +
Yes, you can test emails without signup.
Do you store my emails? +
Emails are stored temporarily and deleted automatically.
Can I test emails from Gmail, Outlook, or any ESP? +
Yes, send from any provider or SMTP server.
Does this replace Mail-Tester? +
This tool provides a fast, simplified deliverability overview.
Why do I see warnings instead of failures? +
Some issues affect deliverability without fully blocking delivery.
Can I run multiple tests? +
Yes, generate a new inbox for each test.
Understanding email deliverability
Why authentication and pre-flight testing matter before you send at scale.
Email deliverability is the likelihood your message reaches the inbox. SPF, DKIM, and DMARC prove sender authenticity and protect recipients. Testing before sending lets you catch configuration gaps, alignment issues, and spam signals so production sends land where they should.