Email Server Test
Check your email configuration including MX records, SPF, DKIM and DMARC. Get an email deliverability score and fix issues.
How to Use the Email Server Test
1. Enter your domain name (e.g. yourdomain.com)
2. Click Test — results appear in a few seconds
3. The score out of 100 shows your overall email security posture
4. Green checkmarks mean that check passed. Red X means it failed or is missing
5. Issues listed at the top tell you exactly what to fix and why
Frequently Asked Questions
Why are my emails going to spam?
The most common reasons emails go to spam are: missing or invalid SPF record, missing DKIM signature, missing or weak DMARC policy, no PTR record on your sending IP, or your IP being on an email blacklist. Use this tool to check your SPF, DKIM and DMARC configuration.
What is SPF and why do I need it?
SPF (Sender Policy Framework) is a DNS record that tells receiving mail servers which IP addresses are authorised to send email from your domain. Without SPF, anyone can forge emails pretending to be from your domain. A missing SPF record significantly increases the chance of your emails being marked as spam.
What is DKIM and how does it work?
DKIM (DomainKeys Identified Mail) adds a cryptographic signature to your outgoing emails. The receiving server looks up your public key from DNS and verifies the signature. This proves the email was not tampered with in transit and that it genuinely came from your mail server.
What is DMARC and which policy should I use?
DMARC tells receiving servers what to do when an email fails SPF or DKIM checks. The three policies are: none (do nothing, just monitor), quarantine (send to spam folder), and reject (refuse the email entirely). Start with none to monitor, then move to quarantine, then reject once you are confident your legitimate emails are passing.
Why does DKIM show as not found?
DKIM keys are published under a selector subdomain like selector._domainkey.yourdomain.com. This tool checks common selectors automatically. If your mail provider uses a custom selector, DKIM may not be found even if it is configured. Check your mail provider's documentation for the correct selector name.