In today's digital era, email has become an essential communication tool for individuals and organizations alike. However, it has also become a prime target for cybercriminals seeking to exploit vulnerabilities and gain unauthorized access to sensitive information. To safeguard your organization from email-based cyber threats, it is crucial to implement robust security measures. Fortunately, the National Cyber Security Centre (NCSC) offers a powerful tool called Email Check, designed to help organizations assess and enhance their email security defenses.

email checker

Email Check, developed by the NCSC, is a free online tool that enables organizations to evaluate the security posture of their email systems. This comprehensive tool evaluates various aspects of email security, identifies vulnerabilities, and provides actionable recommendations to mitigate risks effectively. By utilizing this tool, organizations can fortify their email defenses, reducing the chances of falling victim to phishing attacks, malware distribution, or data breaches.

The Email Check tool performs a thorough analysis of your email infrastructure, assessing both technical and user-focused security measures. It evaluates several critical areas, including email authentication protocols, encryption standards, and security configurations. By scrutinizing these aspects, Email Check identifies potential weaknesses and highlights areas where improvements can be made.

One of the key features of Email Check is its assessment of email authentication protocols such as SPF (Sender Policy Framework), DKIM (DomainKeys Identified Mail), and DMARC (Domain-based Message Authentication, Reporting, and Conformance). These protocols play a vital role in verifying the authenticity and integrity of email messages, preventing spoofing and unauthorized email sources. Email Check examines the implementation and configuration of these protocols, ensuring they are correctly set up and adequately protecting your organization's email domain.

email checker

Another essential aspect evaluated by Email Check is the encryption standards employed within your email system. Encryption is crucial to protect the confidentiality of sensitive information transmitted via email. The tool assesses whether Transport Layer Security (TLS) encryption is correctly implemented, ensuring secure communication between email servers. Additionally, Email Check checks if opportunistic TLS is enabled, which enables encryption even when the recipient's server does not explicitly support it.

Furthermore, the Email Check tool examines the security configurations of your email system, including password policies, user training, and anti-phishing measures. It assesses whether robust password policies are in place, encouraging users to choose strong, unique passwords and enforcing regular password changes. Additionally, it evaluates if user awareness and training programs are implemented to educate employees about email security best practices and common phishing techniques. The tool also analyzes your organization's anti-phishing controls, including email filtering and link scanning, to detect and prevent malicious emails from reaching users' inboxes.

Upon completing the assessment, Email Check provides a detailed report outlining the findings and recommendations for improvement. The report offers valuable insights into the strengths and weaknesses of your email security defenses. It highlights areas that require immediate attention and provides step-by-step instructions to address identified vulnerabilities effectively.

By leveraging the NCSC's Email Check tool, organizations can significantly enhance their email security posture. The tool empowers organizations to proactively identify and address potential vulnerabilities before cybercriminals can exploit them. Implementing the recommendations provided by Email Check helps organizations build a robust email security strategy, safeguarding sensitive information, and preserving the integrity of their communication channels.

Commonly Asked Questions

Q1: Is the NCSC's Email Check tool completely free to use?

A1: Yes, the NCSC's Email Check tool is available free of charge to all organizations. It is part of the NCSC's mission to provide accessible and effective cybersecurity solutions to enhance the security of individuals and organizations in the United Kingdom.

Q2: How long does it take to perform an email security assessment using the Email Check tool?

A2: The time required to perform an email security assessment using the Email Check tool varies depending on the complexity of your email infrastructure. However, the tool is designed to provide quick and efficient evaluations, and most assessments can be completed within a matter of minutes.

Q3: Can the Email Check tool be used by organizations outside the United Kingdom?

A3: Although the Email Check tool was developed by the National Cyber Security Centre in the United Kingdom, it can be utilized by organizations worldwide. The tool assesses email security configurations and protocols that are universally applicable, making it valuable for organizations regardless of their geographic location.

Q4: What level of technical expertise is required to use the Email Check tool?

A4: The Email Check tool is designed to be user-friendly and accessible to organizations with varying levels of technical expertise. While a basic understanding of email systems and security concepts is beneficial, the tool provides clear instructions and explanations to guide users through the assessment process.

Q5: Can the Email Check tool guarantee complete protection against email-based cyber threats?

A5: While the Email Check tool significantly enhances your organization's email security defenses, it does not provide an absolute guarantee against all email-based cyber threats. It is essential to view the tool as part of a broader cybersecurity strategy that includes regular security assessments, user training, and the implementation of industry best practices.


In conclusion, email security is a critical aspect of maintaining a secure digital environment for organizations. The NCSC's Email Check tool offers a powerful solution to assess and enhance email security defenses. By utilizing this tool, organizations can identify vulnerabilities, implement recommended improvements, and significantly reduce the risk of falling victim to email-based cyber threats. Take advantage of this free resource provided by the NCSC and fortify your email security today.