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.

  • 1
    Cloudflare

    Cloudflare

    Cloudflare

    Cloudflare is the foundation for your infrastructure, applications, and teams. Cloudflare secures and ensures the reliability of your external-facing resources such as websites, APIs, and applications. It protects your internal resources such as behind-the-firewall applications, teams, and devices. And it is your platform for developing globally scalable applications. Your website, APIs, and applications are your key channels for doing business with your customers and suppliers. As more and more shift online, ensuring these resources are secure, performant and reliable is a business imperative. Cloudflare for Infrastructure is a complete solution to enable this for anything connected to the Internet. Behind-the-firewall applications and devices are foundational to the work of your internal teams. The recent surge in remote work is testing the limits of many organizations’ VPN and other hardware solutions.
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    Starting Price: $20 per website
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  • 2
    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.
  • 3
    WikiLocks

    WikiLocks

    WikiLocks

    WikiLocks works the way you do, within your most common applications. Simply select the data you wish to protect, assign access to individuals or groups, and distribute the newly protected document. The protection follows your document throughout its lifecycle, no matter how it is accessed, copied, pasted and attached.
    Starting Price: $40
  • 4
    Dark Web ID

    Dark Web ID

    IDAgent, a Kaseya company

    Get More Sales. Streamline Your Costs. Differentiate Your MSP. ID Agent helps your MSP sell your security stack to new and current customers by empowering you with real-time dark web search results (creating urgency), complete with sales & marketing-ready resources and coaching, so you can see profits within 30 days or less. Your Customers are often only concerned about their network passwords being exposed and are not really thinking about the breached 3rd party websites and applications that store their usernames and passwords. With three former CEOs of MSPs on staff, more Managed Service Providers globally rely on ID Agent than any other monitoring software to provide actionable cybersecurity threat intelligence. We have (literally) been in your shoes before, know what challenges and objections you face, and how to overcome them.
    Starting Price: $300 per month
  • 5
    Sealit

    Sealit

    Sealit Technologies

    When implementing a Zero Trust security model you shouldn’t question if your accounts or devices will get get compromised - assume they will. With Sealit, the sensitive data in your emails and files will remain fully protected even in that scenario. It takes one click from your existing inbox to encrypt your sensitive emails. It takes one click to encrypt any file format on your desktop. We made sure your workflow isn’t disrupted as we add a strong layer of protection to your sensitive data. Human error accounts for over 90 percent of cyber attacks on businesses, so you need to have a system in place to minimize the risk. Our patent-pending end-to-end encryption ensures each facet of your business is protected. Our app uses biometrics as authentication which provides you a seamless protection experience. Unlike passwords, biometrics cannot be taken away from you, there’s nothing you need to remember, and you always have it with you.
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