Free email deliverability checker

Find out why your emails go to spam.

Check SPF, DKIM, DMARC, DNS, blacklists, SMTP TLS, BIMI, MTA-STS and TLS-RPT in one report.

or Check SPF record
  • No signup required
  • DNS-only checks
  • Free report
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How it works

From domain to diagnosis in seconds

No account or email access needed. Paste your domain and get a full DNS security report with a prioritised fix list.

01

Enter your domain

No account or email access needed — just your domain.

02

MXFend scans your setup

Authentication, reputation, transport security and brand trust — DNS only.

03

Get a prioritised fix list

A scored report with clear, ranked steps to fix first.

Free Email Security Tools

Everything you need to check your email setup.

Most complete
Email Security Score
Complete domain report for authentication, reputation, and transport security.
Check
SPF Checker
Check whether your SPF record is present and safe.
Check
DKIM Checker
Validate a DKIM selector and DNS record.
Check
DMARC Checker
Check your DMARC policy and enforcement.
Check
MX Checker
Validate your mail exchanger records.
Check
Blacklist Checker
Check whether your mail server IP is listed.
Check
SMTP TLS Checker
Test STARTTLS and TLS certificate health.
Check
BIMI Checker
Validate your BIMI logo and DNS record.
Check
MTA-STS Checker
Validate your MTA-STS DNS and HTTPS policy.
Check
TLS-RPT Checker
Validate your TLS reporting DNS record.
Check
SPF Lookup Visualizer
See your SPF record's full include/redirect tree and DNS lookup budget.
Check
Coverage

What MXFend checks

Authentication
SPF DKIM DMARC
Reputation
Blacklists
Transport Security
SMTP TLS MTA-STS TLS-RPT
Brand Trust
BIMI
Knowledge base

Email deliverability guides

Spam troubleshooting
Emails going to spam Why emails go to spam Gmail blocking emails Outlook marking as spam
Reputation
Domain reputation IP reputation Domain vs IP reputation
SMTP & DNS
Reverse DNS HELO and EHLO
Transport security
SMTP TLS MTA-STS TLS-RPT
SPF troubleshooting
SPF include mechanism SPF redirect modifier

Run a free Email Security Score

Get a complete report covering authentication, reputation, transport security, and brand trust.

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MXFend

Free email deliverability tools for domains.

Tools
Email Deliverability Checker SPF Checker DMARC Checker MX Checker
Guides
Knowledge Base Email auth guide Emails going to spam Domain reputation SMTP TLS MTA-STS TLS-RPT
Company
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