Compare the Top Email Security Software in the USA as of March 2026

What is Email Security Software in the USA?

Email security software protects organizations from cyber threats such as phishing, malware, and spam by filtering incoming and outgoing email traffic. It uses advanced threat detection, encryption, and data loss prevention (DLP) to safeguard sensitive information. These tools also offer features like email authentication (DMARC, SPF, DKIM) and real-time threat intelligence to block emerging attacks. By securing email communications, businesses can prevent data breaches, ensure regulatory compliance, and maintain user trust. Email security software is essential for mitigating human error, which is one of the leading causes of data breaches. Compare and read user reviews of the best Email Security software in the USA currently available using the table below. This list is updated regularly.

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    mxHERO

    mxHERO

    mxHERO

    The leading enterprise technology for email attachment security integrating your email and cloud storage services. mxHERO replaces email attachments with secure cloud storage links so that sensitive files are no longer sent and stored unprotected outside the organization - as they are in standard email. Email can expose sensitive content inside & outside the organization. mxHERO ensures that all email content is managed via client preferred content platforms. mxHERO automatically moves file attachments to cloud storage – keeping valuable digital files out of email – solving for content sprawl, version control, and file size issues. Reduces breach risks with in-flight or at-rest email assets. mxHERO's customers include major global brands and industry leading enterprises. Email is a major security problem but core to how business gets done. mxHERO's clients need to make their existing email more secure without introducing disruptive changes to their employees or customers.
    Starting Price: $5 month/user
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