Explore comprehensive learning resources on email security protocols like DMARC, SPF, and DKIM. From free online courses at DMARC Academy and EasyDMARC to best practice guides and technical RFC documents, deepen your understanding of email authentication and protection with expert-led content and testing tools.
The EasyDMARC Email Investigation Tool helps analyze and diagnose email authentication issues, ensuring proper implementation of DMARC, SPF, and DKIM to enhance email security.
The MXToolbox SMTP Diagnostics Tool allows you to test and troubleshoot email delivery issues, including SMTP, DNS, and email authentication checks for SPF, DKIM, and DMARC. It helps identify and resolve email server problems to improve deliverability and security.
Email deliverability test
Warmy.io’s Email Deliverability Test is a free tool that analyzes email performance by checking for issues like spam triggers, blacklists, and improper SPF, DKIM, or DMARC setups. It provides a deliverability score and actionable insights to improve inbox placement, making it useful for marketers and email admins.
About My Email
About My Email (aboutmy.email) is a tool designed to analyze email deliverability, validate authentication protocols (SPF, DKIM, DMARC), and detect potential issues like spam risks or blacklistings. It helps users optimize their email setups for better inbox placement.
Microsoft Message Header Analyzer (MHA)
Message Header Analyzer by Microsoft. It helps decode and analyze email headers to troubleshoot delivery issues, understand delays, and trace the email’s path through mail servers.
The Google Admin Toolbox Dig tool allows users to perform DNS lookups to troubleshoot domain and email configurations. It helps verify records like A, MX, SPF, DKIM, and others for resolving DNS-related issues.
The ProtoDave DKIM Key Checker verifies the validity of a DKIM public key in DNS and checks its length. It ensures the key meets recommended security standards, typically 1024-bit or 2048-bit, and alerts if it’s too short, which could compromise security.
IsNotSpam is a tool that helps you test your email content to ensure it doesn’t trigger spam filters. By sending your email to the service, it checks for issues like SPF, DKIM, and SpamAssassin flags. The tool provides a report, highlighting potential problems that could cause your email to land in the spam folder, helping you improve delivery and avoid common mistakes.
Autoklose’s Email Spam Checker is an online tool that helps you identify spam trigger words in your email content. Simply paste your email into the checker, and it scans the text for common phrases that could flag it as spam. The tool then provides a list of potential issues along with suggestions for improvement, helping you optimize your emails for better deliverability and ensuring they reach your intended recipients.
Guard.io
Guard.io’s Subdomailing is a tool designed to identify potential phishing or malicious activity by analyzing suspicious subdomains. It helps users detect threats, avoid scams, and enhance cybersecurity awareness.
GMass SMTP Test
The GMass SMTP Test is a free online tool that allows you to test the connectivity and functionality of your SMTP server. It verifies server credentials, checks for errors, and ensures your email server is configured correctly for sending messages. This tool is particularly useful for diagnosing email delivery issues and ensuring smooth SMTP operation.