Best Email Security Software

Compare the Top Email Security Software as of December 2025

What is Email Security Software?

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 currently available using the table below. This list is updated regularly.

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    Varonis Data Security Platform
    The most powerful way to find, monitor, and protect sensitive data at scale. Rapidly reduce risk, detect abnormal behavior, and prove compliance with the all-in-one data security platform that won’t slow you down. A platform, a team, and a plan that give you every possible advantage. Classification, access governance and behavioral analytics combine to lock down data, stop threats, and take the pain out of compliance. We bring you a proven methodology to monitor, protect, and manage your data informed by thousands of successful rollouts. Hundreds of elite security pros build advanced threat models, update policies, and assist with incidents, freeing you to focus on other priorities.
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