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Diagnose why your emails go to spam. Analyze headers, DNS records, domain reputation, and content to get actionable recommendations for better inbox placement.
Gmail:
Outlook (Web):
Outlook (Desktop):
Apple Mail:
Yahoo Mail:
• Headers are most important: They contain SPF, DKIM, and DMARC authentication results
• Domain analysis: We check DNS records for proper email authentication setup
• Content analysis: Email content is scanned for spam indicators
• Minimum requirement: At least one field (headers, domain, or email) must be provided
✓ SPF (Sender Policy Framework) authentication
✓ DKIM (DomainKeys Identified Mail) signatures
✓ DMARC (Domain-based Message Authentication) policy
✓ Email routing and hop analysis
✓ Spam content indicators
✓ Domain reputation factors
✓ DNS record configuration
Email deliverability is the ability of your emails to reach recipients' inboxes rather than being filtered into spam folders or blocked entirely. Our advanced Email Deliverability Checker provides comprehensive analysis of the factors that affect whether your emails successfully reach their intended destination.
Poor email deliverability can severely impact your business communication, marketing campaigns, and customer relationships. Studies show that approximately 20% of legitimate emails never reach the inbox, resulting in lost opportunities, reduced engagement, and decreased ROI for email marketing efforts.
Email authentication protocols are crucial for establishing sender legitimacy. SPF (Sender Policy Framework) verifies that emails are sent from authorized servers, DKIM (DomainKeys Identified Mail) provides cryptographic signatures to ensure message integrity, and DMARC (Domain-based Message Authentication, Reporting, and Conformance) creates policies for handling authentication failures.
Proper DNS setup is fundamental to email deliverability. Our tool examines MX records, SPF records, DMARC policies, DKIM selectors, and reverse DNS (PTR records) to identify configuration issues that could impact delivery rates. Missing or misconfigured DNS records are common causes of deliverability problems.
Domain reputation significantly influences email deliverability. Factors include domain age, SSL certificate validity, blacklist status, and historical sending patterns. New domains or those with poor reputations face higher scrutiny from spam filters and may experience reduced delivery rates.
Email content plays a crucial role in spam filtering decisions. Our analyzer examines subject lines, body content, HTML structure, link quality, image-to-text ratios, and the presence of spam trigger words. Content that appears promotional, contains suspicious links, or uses aggressive language may be flagged by spam filters.
Different email providers use varying spam filtering algorithms and criteria. Our tool simulates how major email providers (Gmail, Outlook, Yahoo, Apple Mail, and SpamAssassin) might evaluate your emails, providing insights into potential delivery issues across different platforms.
Missing or misconfigured SPF, DKIM, or DMARC records are leading causes of deliverability issues. Ensure your SPF record includes all authorized sending sources, implement DKIM signing for all outbound emails, and establish a DMARC policy that aligns with your authentication setup.
Sender reputation is built over time through consistent sending practices, low complaint rates, and good list hygiene. Avoid sending to inactive or invalid email addresses, implement proper unsubscribe mechanisms, and monitor engagement metrics to maintain a positive reputation.
Spam filters analyze email content for suspicious patterns. Avoid excessive use of promotional language, maintain balanced text-to-image ratios, use reputable links, and ensure your HTML is well-structured. Personalization and relevant content also improve deliverability.
Key metrics for measuring email deliverability include delivery rate (percentage of emails that reach the inbox), bounce rate (emails that couldn't be delivered), spam complaint rate (recipients marking emails as spam), and engagement metrics (opens, clicks, replies). Regular monitoring of these metrics helps identify and address deliverability issues promptly.
Advanced strategies include IP warming for new sending infrastructure, implementing feedback loops with ISPs, using dedicated IPs for different email types, monitoring real-time blacklists, and employing machine learning algorithms to optimize send times and content. Regular deliverability audits and testing across different email clients ensure consistent performance.
Use our Email Deliverability Checker to diagnose issues, understand why your emails might be going to spam, and receive actionable recommendations to improve your inbox placement rates. Regular analysis and optimization of your email infrastructure will help ensure your important messages reach their intended recipients.