Professional-grade email authentication and deliverability testing tools. Check your SPF, DKIM, DMARC records, test SMTP/IMAP connections, and monitor blacklists - all free.
✨ No signup required • Instant results • Used by 10,000+ businesses
Everything you need to ensure your emails land in the inbox
Validate your SPF (Sender Policy Framework) record to ensure your emails are properly authenticated and prevent email spoofing.
Use ToolCreate SPF records instantly by selecting your email providers and configuring authorized senders.
Use ToolCheck your DKIM records to verify that your emails are cryptographically signed and authenticated for better deliverability.
Use ToolVerify your DMARC policy configuration to protect your domain from email spoofing and phishing attacks.
Use ToolGenerate DMARC records with our step-by-step wizard. Configure policies, alignment, and reporting in minutes.
Use ToolTest your email content and subject line to predict if they'll land in the inbox or spam folder. Get actionable insights.
Use ToolValidate HTML email templates for rendering issues, spam triggers, and compatibility across 90+ email clients.
Use ToolTest and validate your SMTP server connection and email sending credentials to ensure proper mail server configuration.
Use ToolTest and validate your IMAP server connection for email receiving, reply tracking, and inbox management.
Use ToolCheck if your domain or IP address is listed on 100+ major email blacklists that could damage your deliverability.
Use ToolVerify email addresses for validity, check for catch-all domains, and detect disposable emails to improve list quality.
Use ToolCalculate your email open rate and benchmark against industry standards to measure campaign success.
Use ToolCalculate your email click-through rate and compare with industry benchmarks to measure engagement.
Use ToolCalculate your bounce rate to understand email list quality and its impact on deliverability.
Use ToolMonitor your spam complaint rate and protect your sender reputation with ISP threshold insights.
Use ToolCalculate your email list quality score based on verification results and understand deliverability impact.
Use ToolCalculate how many mailboxes you need based on your daily sending volume and provider limits.
Use ToolProfessional-grade tools trusted by email marketers worldwide
Get real-time analysis and actionable insights in seconds
All tools are completely free to use, no credit card required
Receive detailed recommendations to improve your email deliverability
Check your email infrastructure as often as you need
SPF allows you to specify which mail servers are authorized to send emails on behalf of your domain. It helps prevent email spoofing by verifying the sender's IP address.
DKIM adds a digital signature to your emails, allowing recipients to verify that the message hasn't been tampered with and truly comes from your domain.
DMARC builds on SPF and DKIM, telling email providers what to do with messages that fail authentication checks. It also provides reporting on email authentication activity.
Get automatic email warmup, AI-powered outreach, unlimited sending, and 24/7 deliverability monitoring with DitLead's complete platform.
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