The Best Email Security Software In 2026

Best Email Security Solutions

We have reviewed seven popular email protection software solutions and summarized our insights in a comparison table to help you discover which is best for you.

1. Check Point Harmony Email & Collaboration (Avanan)

Check Point Harmony Email & Collaboration (formerly Avanan Email Security) offers protection against viruses, phishing, malware, data loss, and account compromises. It uses advanced AI technology to block malicious attacks before they can reach your inbox.

Check Point’s Harmony also analyzes each user’s email history, which allows it to quickly detect mail fraud and user impersonations, which can be a serious issue if undetected. The tool protects Microsoft 365 and Google Workspace mailboxes, plus collaboration apps like Teams, SharePoint, OneDrive, and Slack. It connects through an API, so you don’t need to change your MX records.

Check Point does not publicly disclose pricing for Harmony Email & Collaboration. Contact the vendor directly or request a quote through an authorized reseller.

While Check Point is one of the more sophisticated email security solutions out there, it is also one of the most complicated to operate. For this reason, you may need a very tech-savvy person on your team to help with setup and regular use.

2. Barracuda

Barracuda Email Protection is a cloud-based security software that protects users against all 13 types of mail threats such as malware, phishing, denial-of-service attacks, and spam. It utilizes machine learning to achieve the highest accuracy in threat detection. Barracuda also offers encryption and mail attachment protection, meaning you don't have to worry about an email data breach.

Barracuda offers three different plan options: advanced, premium, and premium plus. Unfortunately, the company does not publicly provide their pricing information, which makes it hard to compare apples to apples with other top email security software providers.

3. N-able Mail Assure

N-able Mail Assure offers protection against viruses, spam, malware, ransomware, phishing, and nearly any other type of email threat. The system offers email protection tools both for incoming and outgoing mail, and features like the system’s authentication techniques help keep everyone’s inbox safe. N-able Mail Assure also offers integration with Microsoft 365 and built-in email archiving.

N-able offers a free 30-day trial that doesn’t require a credit card, but it doesn’t disclose pricing without a direct quote from its sales team.

4. Proofpoint

Proofpoint Email Protection offers a robust amount of mail security, including antivirus and antispam protection. The company includes data loss prevention and outbound filtering as well, not to mention other email management features. Furthermore, Proofpoint offers tools like email encryption, imposter mail protection, and report features.

For smaller businesses, Proofpoint is moving Essentials customers to its new 365 Total Protection suite, which is sold through partners with quote-based pricing and a free trial. Authorized reseller Iron Cove currently lists Essentials plans from $3.93 to $8.14 per user per month for teams of up to 25 users.

5. SpamTitan

SpamTitan is an advanced email security software that's specifically designed for businesses and other large organizations. It offers protection against malware, phishing, denial-of-service attacks, spam, and more. Additionally, SpamTitan includes custom filtering tools, data leak prevention, and email encryption.

To access SpamTitan pricing, users must fill out a quote form on its pricing page. SpamTitan works alongside Microsoft 365 as an additional protection layer on top of its native email security.

Users may find it advantageous that tech support is included with TitanHQ’s cybersecurity products and can be accessed via phone or by submitting a ticket through their support portal.

6. IRONSCALES

IRONSCALES is an advanced integrated cloud email security platform that uses adaptive AI and ML technology, enriched with verdicts from a community of more than 36,000 security professionals, to protect its users against sophisticated threats. The key feature of this service is its ability to integrate seamlessly with your email environment using a powerful API in order to provide robust, automated protection that evolves in real time.

Unlike many less comprehensive email protection services, IRONSCALES offers auto-remediation with its Security Operations Center (SOC). This capability reduces the workload on IT teams and minimizes the potential impact of attacks.

IRONSCALES offers two main business plans, Email Essentials and Email Protect, both priced by quote, and it works with Microsoft 365 and Google Workspace. A free trial is available if you want to test it before you buy.

7. Cisco Secure Email Threat Defense

Cisco Secure Email Threat Defense is a cloud-based security solution that protects users against a wide range of threats, including phishing, ransomware, and business email compromise (BEC). According to ScienceSoft, BEC scams can lead to multimillion-dollar financial losses and serious reputational damage, making them one of the most dangerous email threats.

It uses advanced threat detection techniques, including machine learning, artificial intelligence, and threat intelligence from Cisco Talos, to identify malicious emails, and it provides a variety of remediation options directly in the platform or through Cisco XDR.

Cisco provides a free trial for its email security solution, allowing potential users to assess its features. Paid plans are priced per user, so it's wise to use the trial before committing. While Cisco Secure Email Threat Defense may be too much for small businesses, it could be a valuable investment for large enterprises dealing with complex and numerous email threats.

How To Choose The Right Email Security Service

Most of the tools above are built for businesses that run Microsoft 365 or Google Workspace, and most of them price by quote rather than publishing a rate. Start by confirming the tool supports your email platform, then compare these factors.

When selecting security services for your mailbox, you want to look for a solution that:

• Is easy to set up and use
• Provides adequate protection
• Offers strong filtering accuracy
• Includes phishing protection
• Encrypts data
• Is customizable to meet your needs
• Connects well with your other business tools

Read more:

• The Most Secure Email Providers. Updated in 2026
• Safe Unsubscribe: Risks, Best Practices, and Solutions
• Have I Been Pwned? What It Means And How To Protect Your Email