Email Security

    Advanced Email Security

    Block email-based threats with AI-powered security from Mimecast.

    Mimecast Advanced Email Security blocks the most dangerous attacks

    As the top attack vector, email demands the strongest possible protection. We block the most dangerous email-borne attacks, from phishing and ransomware to social engineering, payment fraud, and impersonation.


    High volume

    Email volume is increasing at 82% of organizations - higher than ever,  leading to a greater volume of threats


    59% of cybersecurity leaders believe growing attack sophistication is their biggest challenge

    Visible to executives

    Key business decisions are being shaped around cyber risk due to the rise in awareness of email security risk

    World-class Advanced Email Security


    AI-powered, world-class detection

    Apply the power of AI, machine learning, and social graphing to make security smarter and empower employees.



    Choose your deployment option - email security delivered with or without a gateway.


    Full continuum

    Protect more than email by leveraging insights from across your security tools.

    Mimecast Advanced Email Security at a glance


    Comprehensive phishing protection

    Improve protection with real-time threat analysis, using AI to remove threats before emails are opened.


    Advanced BEC defense

    Leverage industry-leading AI to defend against sophisticated business email compromise and impersonation attacks.


    QR code defense

    Block quishing attacks with QR code detection and deep URL scanning.


    Advanced malware protection

    Protect against the most sophisticated malware threats with an AI-powered inspection service.


    Integrated email intelligence

    Enable threat sharing and enhanced detections with over 250 partner integrations.


    Wondering which email security option is the right fit for you?

    Take a short quiz and we’ll tell you which deployment method is best suited to close gaps in your existing security.

    Which Advanced Email Security is right for you?

    Email Security

    Cloud Integrated

    Purpose-built, AI-powered integrated cloud email security solution that enhances and extends M365 protections.
    Company size
    Small to medium 
    Deployment method
    No MX record change
    Platform integrations
    100% cloud: M365 only
    Administration settings
    Simple, customizable controls
    AI-powered detection

    Email Security

    Cloud Gateway

    AI-powered SEG in the cloud that secures any type of email environment, even the most complex.​
    Company size
    All sizes
    Deployment method
    Secure Email Gateway
    Platform integrations
    M365, Google Workspace, hybrid, on-premise
    Administration settings
    Advanced, granular controls
    AI-powered detection

    What our customers say

    Don’t take our word for it - Mimecast has protected organizations’ communications, people, and data since 2003.

    Customer Case Studies

    A Mimecast plan that fits your organization’s needs

    Mimecast offers multiple plans designed to meet your organization’s needs and enable you to Work Protected.

    Frequently Asked Questions

    Explore more details about email security.

    Mimecast protects customers with multiple detection engines that pairs advanced AI and machine learning with industry-leading technologies tuned and improved over the past 20 years based on trillions of emails and millions of users.​

    All email users are potential targets for cyber criminals. Any organization that uses email, regardless of location, industry, size, or any other factor, is at risk of suffering the consequences of a cyber attack. Without an email security plan and solution, every email user at any organization of any kind is vulnerable to cyber threats such as malware, phishing, spam, and data exfiltration.

    Advanced email protection is a comprehensive, cloud-based enterprise-grade protection solution that guards email systems from a range of cyber attacks such as spam, viruses, and malware. As cyber threats constantly evolve, it's crucial for organizations of all sizes to implement advanced email protection.

    Advanced email security products should provide organizations with:

    • A secure email gateway to block spam, viruses, and malware.
    • Scans of every email, attachment, and URL on every click to detect and prevent impersonation fraud, ransomware, whaling, phishing and spear-phishing attacks.
    • Quarantine features to stop inadvertent and malicious leaks.
    • Secure messaging for employees to share confidential and sensitive information without worrying about complex access keys or encryption methods.
    • Large file send capabilities to send files that exceed mailbox restrictions.

    Advanced email security products safeguard your business data by stopping the cyber attacks that lead to data exfiltration. Organizations should ensure their solutions offer the following features:

    • Email security utilizing AI, multi-faceted inspection services and sophisticated intelligence to stop BEC, spam and malware before they reach your users
    • Targeted Threat Protection that scans every email, attachment and URL on every click to provide advanced threat protection from impersonation fraud, ransomware, whaling, phishing and spear-phishing attacks.
    • Content Control and Data Leak Prevention that uses powerful scanning and quarantine features to stop inadvertent and malicious leaks at the gateway.
    • Secure Messaging makes it easier for employees to share confidential and sensitive information without worrying about complex access keys or encryption methods.

    While every organization requires some form of advanced email security, the needs of each organization can vary based on their own specific environment. When choosing which advanced email security solution to choose, the following should be considered:

    • Advanced threat detection capabilities, including AI and real-time scanning for phishing attempts, and malware to identify and block suspicious emails.
    • Customizable controls to meet the needs of the organization and security team processes.
    • Scalability to accommodate growth within the organization.
    • Compliance requirements such as HIPAA, GDPR, or other relevant standards when operating in regulated environments.
    • Seamless integration with existing email infrastructure, third party senders, security tools and workflows.

    Ready to get started?

    See how Mimecast can help your organization Work Protected™

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