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Top Rated Email Security Software with Small business - Page 3

Last updated: April 2026

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79 software options

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.

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PhishTitan logo

Powerful Phishing Protection.

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PhishTitan is a cloud-based email security solution that helps businesses manage phishing protection for Microsoft 365 applications.

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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.

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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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NeverBounce logo

Real time email verification and email list cleaning service

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NeverBounce is a cloud-based email verification and list cleaning solution that allows users of any level or scale to verify email addresses in bulk over time or instantly one at a time, providing a central dashboard boasting real time progress tracking, a custom API / webhook and JavaScript widget

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DeliverySlip logo

Secure electronic signature, email encryption & file sharing

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DeliverySlip is a cloud-based email security, file sharing and electronic signature solution which offers industrial-grade email encryption, secure file transfer, electronic approvals, web forms, bulk send, and more. The software works inside Microsoft Outlook, Gmail, and various other applications.

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Egress Protect logo

Email encryption and security platform

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Egress Protect is an email security software designed to help financial, healthcare, and government organizations streamline email encryption and file management operations. The application allows employees to handle data archiving, filtering, and storage operations via a unified platform.

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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.

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Proofpoint Email Protection logo

Secure email gateway management and threat intelligence tool

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Proofpoint Email Protection is a computer security management software designed to help businesses identify and block threats using AI-enabled tools. It offers an advanced business email compromise (BEC) defense feature, which enables administrators to analyze various attributes including message header and senders’ IP address.

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MailWasher logo

Software for blocking spam and junk emails

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MailWasher is an anti-spam software designed to help businesses of all sizes locate, view, and delete suspicious or junk emails. It includes a spam detection tool, which allows organizations to scan and remove unwanted emails across servers.

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AVG Internet Security Business Edition logo

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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Guardio logo

Chrome extension for blocking malware and phishing attacks

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Guardio is a Google Chrome extension designed to help businesses provide protection against malware, phishing attacks, and identity theft and remove pop-up messages from the browser. It lets employees prevent unauthorized users from accessing web browsers and remove existing malware from devices via a unified platform.

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Dark Web ID logo

Threat detection and monitoring for businesses and MSPs

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Dark Web ID is a cloud-based cybersecurity tool, which monitors the dark web and alerts businesses to any risks or threats. The platform can be used by MSPs or enterprises to prevent data breaches and ensure sensitive employee or company data is not available on the dark web.

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eM Client logo

Email, calendar, contacts, tasks, notes and chat in one app

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eM Client is a powerful email client with a clean and easy-to-use interface, which supports PGP and S/MIME encryption and digital signatures. Upload and lookup GPG keys on eM Keybook, Proton and keys.openpgp.org. Password-protected startup. eM Client easily connects to any email service.

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SendGrid logo

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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Zivver logo

Email Security Made Effortless

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Zivver is email security software which helps enterprises transfer business documents and ensure secure e-mail communication. It allows users to retract emails, view risks, causes, and impact of data breaches, configure workflows, and generate custom reports.

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Area 1 logo
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Secure email gateway and anti-spam software

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Area 1 Horizon is a network security management software designed to help businesses protect systems against phishing attacks across various traffic sources including emails, web pages, and networks. The platform enables administrators to receive notifications about blocked phishing campaigns on a unified interface.

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M365 Manager Plus logo
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Management, reporting, auditing, and monitoring of Microsoft

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M365 Manager Plus is a reporting, auditing, monitoring, management, and security solution for Microsoft 365. Designed for businesses of all sizes, it helps users manage Exchange Online, Azure AD, Microsoft Teams, OneDrive for Business, and other services from a centralized dashboard.

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mailbox logo
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Secure encrypted email and workspace platform

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Mailbox provides a comprehensive digital workspace combining secure email, cloud storage, video conferencing, and office tools in one integrated platform. The service stores data in certified German data centers with consistent encryption during storage and transmission, ensuring GDPR compliance and enhanced security. Users benefit from spam-free inboxes, collaborative tools, and an infrastructure powered by renewable energy.

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DMARCTrust logo
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Email authorization monitoring & DMARC compliance platform

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DMARCTrust provides email authentication monitoring through automated DMARC report processing and analysis. The platform identifies all services and IP addresses sending emails on behalf of a domain, tracks SPF and DKIM authentication pass rates, and monitors DNS records for unauthorized changes every five minutes. It includes a dedicated reporting address, automated data collection from major email providers, and alerts for authentication failures and configuration issues.

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EuropeanMX logo
(0)

Cloud-based anti-spam for incoming and outgoing messages

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Use the cloud redundancy solution EuropeanMX as a reliable spam filter. Our system offers nearly 100% filter accuracy and virtually no false positives. Protect your IP ranges before getting blacklisted. Continuously archive your emails with EuropeanMX to always have a backup of your emails.

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Stalwart logo
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Open-source mail and collaboration platform

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Stalwart Mail Server is an open-source email platform combining collaboration tools and security features in one unified solution.

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Palisade logo
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Email security software

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Palisade is an AI-powered DMARC platform that automates the implementation of DMARC to help users stop landing in spam and get their verified email checkmark. The platform integrates with over 800 third-party apps and features smart DMARC capabilities, email threat detection, and expert human support to improve email deliverability and security.

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OpenText Data Privacy and Protection logo
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Data privacy and protection portfolio

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Voltage is a data privacy and protection portfolio that can be used for data privacy readiness, secure collaboration, structured data optimization, and other use cases. It offers solutions for file analysis, sensitive data management, encrypted email, and more.

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SpamTitan Plus logo
(0)

Zero-day threat protection and intelligence

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SpamTitan Plus is an anti-phishing solution, which provides features such as URL inspection, malicious link neutralizing, URL rewriting, and time-of-click analysis.

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