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Email Security Software with Threat Protection (2026)

Last updated: March 2026

Why is threat protection important for email security software users?

Based on GetApp's analysis of verified user reviews collected between July 2021 and August 2024.

Threat protection in email security software blocks malicious emails, attachments, and links, identifies and manages potential threats, provides training to recognize phishing attempts, and ensures sensitive data remains secure. Of the 160 reviewers who rated threat protection, 94% rated this feature as important or highly important.

Key features of email security software based on insights from 967 verified reviews

  • Email Attachment Protection: Users value encryption, customizable blocking, and sandbox features for secure and straightforward handling of sensitive attachments. 95% of reviewers rated this feature as important or highly important.
  • Threat Response: Reviewers appreciate the quick, automated threat detection and response, which helps reduce IT resources and increases security. 95% of reviewers rated this feature as important or highly important.
  • Spam Blocker: Reviewers note effective spam filtering, customizable rules, and reduced clutter, making inbox management easier and more efficient. 94% of reviewers rated this feature as important or highly important.
  • Encryption: Users emphasize the importance of end-to-end encryption for securing sensitive communications, with ease of use being a crucial factor. 92% of reviewers rated this feature as important or highly important.
  • Reporting/Analytics: Reviewers find value in detailed reports and analytics that provide insights into email threats and help inform security decisions. 81% of reviewers rated this feature as important or highly important.
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User rating

81 software options

ESET Endpoint Security logo

Network security, network monitoring & endpoint protection

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ESET Email Security protects email communications for organizations with 250+ employees. Available as cloud-based and on-premises, it ensures internet security and malware protection. Features include mail protection, cloud sandbox technology, remote device management and firewall configuration.

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Hoxhunt logo

Make security training engaging, personalized, and effective

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Hoxhunt is a security awareness training software designed to help businesses educate and train employees to identify and report phishing attacks or malicious emails. Administrators can create relevant content to automatically send personalized malicious emails to employees.

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SpamTitan logo
Category Leaders

Anti-spam filter for business email. Vital email security.

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SpamTitan blocks spam, viruses, malware, ransomware, phishing attempts and other email threats. SpamTitan provides advanced yet easy to use email security for your business. Office 365 friendly

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SendGrid logo
Category Leaders

Delivers reliable email at scale for businesses

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SendGrid is a solution that provides a cloud-based email infrastructure to help relieve businesses of the cost and complexity of maintaining custom email systems. It provides email delivery, scalability and real-time analytics along with APIs. The platform also offers SMTP service, email validation, deliverability insights, and dynamic templates, while supporting multiple programming languages including Node.js, Python, and Java.

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Microsoft Defender for Office 365 logo
Category Leaders

Cloud-based email security and threat management software

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Microsoft Defender for Office 365 is a cloud-based email security software designed to help businesses automatically detect, investigate, and resolve potential email threats on a centralized platform. Supervisors can configure security policies, perform spoof checks, and maintain a record of reported incidents.

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AVG Internet Security Business Edition logo
Category Leaders

Cybersecurity platform for small and midsize businesses

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AVG Internet Security Business Edition is a complete protection solution that helps small and midsize businesses keep their systems and devices safe from external threats.

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Zerospam logo

Cloud email security & anti-spam solution

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ZEROSPAM is a complete cloud email security and anti-spam solution that protects domains against spam, ransomware, spear phishing, viruses, phishing and all harmful emails. Detect disguised executable files & infected macros sent as attachments via emails or downloaded through a malicious link.

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NeoCertified logo
Category Leaders

Secure email for confidential & sensitive documents

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NeoCertified provides secure email encryption with Outlook integration for businesses of all industries, including healthcare, finance, legal & education

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Cypherdog Encryption logo
Category Leaders

One click. Complete protection.

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Cypherdog Encryption (CE) provides the ability to encrypt and decrypt e-mails with attachments with confirmation of the identity of the parties to the communication.

No "trusted" third party, zero-knowledge security model, asymmetric encryption.

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Symantec Email Security.cloud logo

Anti-spam and email security software

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Symantec Email Security.cloud is an anti-spam software designed to help businesses filter unwanted messages and protect the system from email-borne viruses. The platform offers data loss prevention functionality, which enables managers to encrypt and control sensitive data.

Read more about Symantec Email Security.cloud

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Proton Mail logo

Web-based email management platform

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ProtonMail is a web-based email management platform that helps businesses securely transmit encrypted emails between users both inside and outside of the organisation.

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DNSFilter logo

Cloud-based cybersecurity and network monitoring platform

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DNSFilter is a cybersecurity management software that enables enterprises, K-12 schools, and universities to detect online security threats and malware using artificial intelligence (AI) technology, machine learning (ML) algorithms, and content filtering capabilities.

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Topsec Cloud Solutions logo

Your Managed Email Security Specialists

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Topsec Email Security is a complete email filtering solution that helps organizations to check all their incoming and outgoing email content for virus and spam.

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Flashstart logo

DNS filtering software provider

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FlashStart is at the forefront of cyber security innovation, leveraging AI-powered DNS intelligence to stay one step ahead of evolving threats.

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ALTOSPAM logo

Effectively protect all your company's emails

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ALTOSPAM is an email protection solution for all businesses, associations and local authorities. Choose advanced email security compatible with all mail servers, including Office 365. Try ALTOSPAM for free.

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Encyro logo

Secure file sharing and electronic signatures software

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Send encrypted email and attachments to any email address, without forcing recipients to sign up. Clients can send secure messages and files with a simple link click. Request electronic signatures with advanced compliance options and personalize the platform with custom branding, logo, and colors.

Read more about Encyro

Users also considered
Keepnet Labs logo

Extended Human Risk Management Platform, Empowered by AI

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Harden your Office 365, Google Workspace, and Secure Email Gateways (SEGs) for full protection. Keepnet’s Email Threat Simulator (ETS) continuously tests your secure email gateway solutions, such as Office 365 and Google Workspace, by sending real-world attacks to a dedicated test inbox.

Read more about Keepnet Labs

Users also considered
Mailock logo

Secure emails with encryption and recipient authentication

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Exchange confidential information securely using your existing email infrastructure. Encrypt messages and authenticate your recipients.

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Libraesva Email Security logo
Category Leaders

Exceptional Email Security

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Libraesva Email Security stops known and emerging email threats from reaching their target, so you only receive legitimate messages. It provides exceptional email security by integrating cloud email and a secure email gateway with Libraesva’s unique Adaptive Trust Engine.

Read more about Libraesva Email Security

Users also considered
Avanan logo

Email Security — Reinvented

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Cloud Security, Cloud Email Security, Office 365 Security, Phishing, BEC, Anti-phishing, Malware, Email Account Breach, Business Email Compromise

Read more about Avanan

Users also considered
MimeCast Email Security logo

Cloud-based email security and threat intelligence platform

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MimeCast Email Security is a cloud-based secure email gateway designed to help businesses in healthcare, IT, legal, financial services, manufacturing, and other industries protect conversations from malware, spam, ransomware, spear-phishing, and zero-day attacks. Supervisors can monitor, detect and remediate internal threats by inspecting internal emails for malicious attachments, links, or confidential information.

Read more about MimeCast Email Security

Users also considered
McAfee Security for Email Servers logo
Category Leaders

Cloud-based email security platform

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McAfee Security for Email Servers is a cloud-based platform, which helps businesses block spam and filter messages to protect against malicious information from entering network. It provides security for incoming and outgoing emails and assists with content inspection, reputation analysis, and malware protection.

Read more about McAfee Security for Email Servers

Users also considered
Avast Premium Business Security logo

Premium online security and privacy protection for SMB

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Avast Premium Business Security combines our next-gen antivirus with VPN and USB control to help your employees and their devices stay more private and safer online, as well as offline. 

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Users also considered
Paubox Email Suite logo

HIPAA-compliant email encryption software

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Paubox Email Suite is a HIPAA-compliant email encryption software designed to help businesses manage and secure emails using encryption and data loss prevention methods. It includes ExecProtect, which allows businesses to prevent data breaches, phishing, and display name spoofing attacks by automatically detecting and blocking impersonation scams and informing administrators via emails.

Read more about Paubox Email Suite

Users also considered
Symantec Enterprise Cloud logo

Cybersecurity platform for threat protection

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Symantec Enterprise Cloud is a cybersecurity platform that provides integrated solutions for various challenges faced by organizations. The system offers data-centric hybrid security for organizations both on-premises and in the cloud. Symantec Enterprise Cloud is designed to provide consistent compliance, secure remote work, and data and threat protection.

Read more about Symantec Enterprise Cloud

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