Email Deliverability Test
Comprehensive analysis of email deliverability and sender reputation
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What we check:
- SPF, DKIM, and DMARC authentication
- MX record configuration
- Blacklist and reputation status
- Provider-specific deliverability
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 ~allAdd 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.comStart 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
- Check email headers for authentication results
- Verify DNS records are properly configured
- Monitor sender reputation scores
- Review bounce and complaint rates
- Test with different email providers
- 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.
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