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    Email Deliverability Test

    Comprehensive analysis of email deliverability and sender reputation

    Email deliverability testing checks SPF, DKIM, DMARC, blacklist status, and sender reputation to predict inbox placement across major email providers.
    Domain Deliverability Check
    Enter your sending domain to analyze email deliverability factors

    Ready to Test Email Deliverability

    Enter your sending domain above to get a comprehensive deliverability analysis.

    What we check:

    • SPF, DKIM, and DMARC authentication
    • MX record configuration
    • Blacklist and reputation status
    • Provider-specific deliverability
    Educational Content
    Learn about email deliverability, authentication protocols, and best practices
    About This Tool

    This page provides original, human-reviewed information about email deliverability testing, explaining how MX presence, authentication, and blacklist status combine into an overall deliverability picture for a domain.

    What is Email Deliverability?

    Email deliverability refers to the ability of your emails to reach recipients' inboxes successfully. It's determined by various factors including sender reputation, authentication protocols, content quality, and recipient engagement.

    Key Authentication Protocols

    SPF (Sender Policy Framework)

    Specifies which IP addresses are authorized to send emails for your domain.

    DKIM (DomainKeys Identified Mail)

    Uses cryptographic signatures to verify that emails haven't been tampered with.

    DMARC (Domain-based Message Authentication)

    Builds on SPF and DKIM to provide policy instructions for handling authentication failures.

    Factors Affecting Deliverability

    • Sender reputation and IP reputation
    • Email authentication (SPF, DKIM, DMARC)
    • Content quality and spam indicators
    • Recipient engagement rates
    • List hygiene and bounce rates
    • Sending frequency and volume

    Setting Up Email Authentication

    Proper email authentication setup is crucial for good deliverability. Follow these steps to configure SPF, DKIM, and DMARC for your domain.

    1. SPF Record Setup

    v=spf1 include:_spf.google.com ~all

    Add this TXT record to your domain's DNS. Replace with your email provider's SPF include.

    2. DKIM Setup

    DKIM setup varies by email provider. Most providers will give you a DKIM record to add to your DNS.

    selector._domainkey.yourdomain.com TXT "v=DKIM1; k=rsa; p=MIGfMA0GCSq..."

    3. DMARC Policy

    v=DMARC1; p=quarantine; rua=mailto:dmarc@yourdomain.com

    Start with 'p=none' for monitoring, then gradually move to 'quarantine' or 'reject'.

    Common Email Providers

    Google Workspace

    SPF: include:_spf.google.com

    DKIM: Configure in Admin Console

    Microsoft 365

    SPF: include:spf.protection.outlook.com

    DKIM: Configure in Security Center

    Common Deliverability Issues

    Identify and resolve common email deliverability problems that can affect your sender reputation.

    Emails Going to Spam

    Causes:Poor sender reputation, missing authentication, spammy content

    Solutions:Implement SPF/DKIM/DMARC, improve content quality, warm up IP addresses

    High Bounce Rates

    Causes:Invalid email addresses, poor list hygiene, server issues

    Solutions:Regular list cleaning, email validation, proper MX configuration

    Authentication Failures

    Causes:Misconfigured DNS records, missing DKIM signatures

    Solutions:Verify DNS records, check DKIM selector, update SPF includes

    Blacklist Issues

    Causes:Compromised accounts, spam complaints, poor sending practices

    Solutions:Request delisting, improve security, implement double opt-in

    Diagnostic Steps

    1. Check email headers for authentication results
    2. Verify DNS records are properly configured
    3. Monitor sender reputation scores
    4. Review bounce and complaint rates
    5. Test with different email providers
    6. Use email deliverability testing tools

    Frequently Asked Questions

    Common questions about email deliverability and authentication.

    How often should I check my email deliverability?

    Monitor deliverability metrics weekly and run comprehensive tests monthly.Check immediately after any DNS or configuration changes.

    What's a good deliverability score?

    A score above 90 is excellent, 80-90 is good, 70-80 is fair, and below 70 needs improvement.Focus on fixing critical issues first.

    Do I need all three authentication methods?

    While not strictly required, implementing SPF, DKIM, and DMARC together provides the bestprotection and deliverability. Start with SPF, add DKIM, then implement DMARC.

    How long does it take for changes to take effect?

    DNS changes typically propagate within 24-48 hours. Reputation improvements can takeseveral weeks of consistent good sending practices.

    Why are my emails still going to spam after setup?

    Authentication is just one factor. Content quality, sender reputation, recipient engagement,and list hygiene all affect deliverability. Consider warming up your IP and improving content.

    Can I use the same DKIM key for multiple domains?

    While technically possible, it's recommended to use separate DKIM keys for each domainfor better security and easier management.

    Related Tools

    MX Lookup
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    DMARC Checker
    Check and analyze DMARC records
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    Analyze email headers
    DKIM Checker
    Verify DKIM signatures
    WHOIS Lookup
    Domain registration info
    SMTP Test
    Test SMTP connectivity
    SSL Certificate Lookup
    Check SSL certificates
    DNS Propagation Checker
    Check DNS propagation
    Ping Test
    Test network connectivity
    Traceroute
    Trace network path
    Subnet Calculator
    Calculate IP subnets
    What Is My IP
    Check your IP address

    Related Guides

    Sender Reputation Warm-Up Guide
    How to Pass Gmail Spam Filter (2025)
    Email Bounce Codes Explained

    Need Help?

    Our tools are designed to be intuitive, but if you need assistance, we're here to help.

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    About Our Tools

    Professional-grade email and DNS diagnostic tools trusted by IT professionals worldwide.

    Free to UseNo RegistrationReal-time Results
    EmailToolBox LogoEmailToolBox

    EmailToolBox is a free suite of email testing, deliverability and domain diagnostics tools. Check your email health, validate SPF/DKIM/DMARC, look up DNS records and monitor blacklist status in seconds - no signup required.

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    Email Diagnostics

    • Email Health Check
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