Free Email Deliverability Test & Spam Score | MXValidation
Email Deliverability & Spam Testing - Free Online Tool
Test your email authentication, spam signals, DNS configuration and technical deliverability. Get a clear score, identify problems and learn how to fix them.
1
**Copy your test address**
Get a unique address for this test.
2
**Send an email to it**
Use your usual email app or platform.
YOUR TEST EMAIL ADDRESS`auFiBa3aT5_umIiYRmHhFU4Bk-py-jUTxB8NVA@s1.mxvalidation.com`
One address. One test. Valid for 24 hours.See how the report looks? View example
3 guest tests or 10 with a verified free account per rolling 24 hours. See limits.
Use a test copy without confidential information. Guest reports are kept for 3 days. Privacy policy.
SEE WHAT YOU GET
Demo report - illustrative results, not a real email test.
EXAMPLE OVERALL SCORE
6.3 out of 10
9 of 10 checks assessed
Unknown checks earn no points.
SPF authentication Failed
DKIM authentication Passed
DMARC policy & alignment Passed
SpamAssassin score Warning
Sender IP reputation Unknown
HTML & MIME structure Warning
**What to fix first in this example**
The sending IP is not authorized by the SPF policy. Publish one valid SPF record for the evaluated identity and include every authorized sending service.
FROM SEND TO INSIGHT
How It Works
Use the message and sending platform you want to check.
01
Get your unique test email address.
Copy the personal address above. Each address accepts one test message.
02
Send an email from your email client or marketing platform.
Send a test copy using your usual sending configuration.
03
Review your score, technical checks and recommendations.
Choose Check Your Score. The report updates as the analyses finish.
TEN CHECKS. CLEAR NEXT STEPS.
What We Check
Authentication, sending infrastructure and the message itself - with unavailable checks clearly marked Unknown.
Email Authentication
Understand whether the sending service and message identity are authenticated and aligned.
- SPF
- DKIM
- DMARC
Illustrative statuses Pass Warning Fail
Spam & Reputation
Review spam-rule contributions and the identity and blocklist signals of the sending IP.
- SpamAssassin
- Sending IP DNS blocklists
- Reverse DNS / PTR and forward matching
From the demo report SpamAssassin: Warning
Check an IP against blocklists
Technical Email Health
Find structural and delivery details that can affect handling and safe rendering.
- SMTP TLS on the test delivery
- Email headers, including List-Unsubscribe for identified mailing lists
- HTML / MIME structure
- Link syntax, DNS and visible destination mismatches
From the demo report SMTP TLS: Passed
Link destinations are not opened. Domain blocklist scanning and provider inbox-placement tests are not part of these ten checks. Read what each check measures.
A CLOSER LOOK AT YOUR CONFIGURATION
Free Email Testing & DNS Tools
Diagnose email configuration, authentication and deliverability problems with our free online tools.
01
Authentication & identity
Check who can send for your domain and how your brand is verified.
02
Receiving mail & DNS configuration
Review receiving mail servers and the policies that protect email in transit.
03
Message & reputation
Inspect a saved message or investigate a sending IP.
A DIAGNOSTIC GUIDE
What Does Your Email Deliverability Score Mean?
Your report uses a weighted score out of 10. The equivalent 0–100 scale below shows the same color thresholds: 5/10 = 50/100 and 8/10 = 80/100.
0–49
50–79
80–100
Needs attention
Start with failed authentication and other flagged issues. Unavailable checks can also lower the score.
Review the findings
Some checks earned points. Work through the failures and warnings before your next send.
Stronger technical results
More of the weighted checks passed. Review individual warnings even when the overall score is high.
Your score reflects technical email configuration and spam-related signals. It does not guarantee inbox placement with Gmail, Outlook or other providers. Missing and unavailable checks earn no points. How the score is calculated.
BEFORE YOUR FIRST TEST
Frequently Asked Questions
Copy your unique test address, send your email to it from the platform you use, then choose Check Your Score. We analyze authentication, SpamAssassin signals, sending-IP reputation, DNS and message structure. This diagnoses technical risks; it does not test placement in Gmail, Outlook or other recipient inboxes.
Yes. Guests can view 3 tests per rolling 24 hours. A verified free account has a default allowance of 10 tests in that period; individual account limits may differ. The standalone DNS tools and local EML viewer do not consume this email-test allowance and have separate abuse-prevention limits.
SPF specifies which sending services may use an envelope-sender domain. DKIM signs a message so receivers can verify its signing domain and integrity. DMARC checks alignment with the visible From domain and publishes a policy for authentication failures.
No. Inbox placement depends on additional factors, including sender reputation, recipient engagement and provider-specific filtering. The score summarizes the technical evidence available in this test.
A new test address accepts one message for 24 hours. Guest report details are retained for 3 days after receipt. Account-owned history and database results have no automatic expiry and remain until you delete the test or account. Original SMTP spool files have a separate retention period of approximately 30 days after successful synchronization; queued messages may be retained longer. A minimal used-address record is kept to prevent reuse.
Read the full retention and privacy policy.
Ready to Test Your Email Deliverability?
Find authentication issues, spam signals and technical problems before they affect your email campaigns.