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Top Rated Email Security Software with Third party integration - Page 2

Last updated: May 2026

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54 software options

365 Total Protection logo

Email security management for Microsoft Office 365

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365 Total Protection is an email security & compliance solution for Microsoft Office 365 with features for tracking emails in real time, handling infomail, blocking spam, filtering for compliance, defending against threats, black & whitelisting, archiving emails, analyzing communications, & more

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PowerDMARC logo

Email security and anti-spam software

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PowerDMARC is a cloud-based email security software designed to help businesses secure emails from spam, spoofing, phishing, and other online threats. The platform utilizes artificial intelligence (AI) technology to automatically convert XML data into charts, numbers, and graphs, enabling users to view and evaluate related metrics.

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NoID logo

We protect email, what you write, read and attach

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NoID is a cloud-based secure email encryption platform. NoID SecureEmail delivers emails from A to B encrypted "On send", and decrypted "On receive". It runs parallel to the existing email solution without any requirement to change any part of it.

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Libraesva LetsDMARC logo

Solution for managing email and domain security

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Libraesva LetsDMARC is an email authentication solution designed to enhance email reputation management and secure message delivery. By preventing cybercriminals from impersonating your domains and sending fraudulent emails, it provides a layer of protection for your business partners, employees, and customers. Users can
Libraesva LetsDMARC is the best way to prevent cybercriminals from impersonating your domains and sending fraudulent emails to your business partners, employees, and customers.

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Retarus logo

Your Communications Need More Than Just the Best

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The Retarus Communications Platform helps you secure, modernize, consolidate, and cloudify existing communication infrastructures. Make your communications platform work better so you can work better: with Retarus.

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Barracuda Incident Response logo

Email security and digital forensics software

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Barracuda Forensics and Incident Response is an email security software designed to help businesses identify and manage various external email attacks including ransomware or phishing emails. The application enables organizations to monitor security threats, block malicious emails, and automate workflows.

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SpamTitan logo

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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PhishER logo

Web-based phishing emergency platform

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PhishER is a web-based Security Orchestration, Automation and Response (SOAR) platform designed to help security teams automate the prioritization of emails and respond to various threats. It groups and categorizes emails based on rules, tags and actions, allowing users to process user-reported suspicious and phishing emails in mailboxes across the entire organization.

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SilverSky Email Protection Suite logo

Advanced email security and compliance for SMBs

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SilverSky Email Protection Suite is an email protection service that helps small and mid-sized businesses identify and prevent cybersecurity threats in compliance with industry regulations. Protects against targeted attacks, social engineering and data loss.

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Mail Assure logo

Email, Secured.

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Cloud-based email security designed to help your customers stay in control while safeguarding their inbound and outbound email.

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Vade logo

Collaborative cybersecurity based on IA, enhanced by people.

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Vade is a global cybersecurity company specializing in the development of collaborative email security solutions. Combining human and machine intelligence, Vade's solutions form a cybersecurity alliance that is powered by AI and enhanced by people.

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Mailinblack logo

Cloud-based & on-premise email protection software

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Mailinblack is a cloud-based and on-premise email protection software, which helps organizations check incoming emails for spam or viruses and automatically sort them in inboxes. Features include anti-spear phishing, newsletter categorization, notifications, reporting and analytics.

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ConnectWise SIEM logo

Threat detection and response management software

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ConnectWise SIEM is a threat detection and response management software designed to help enterprises create, launch, and manage cybersecurity programs. The platform enables organizations to identify potential threats and malicious activities across networks & connected devices via a unified portal.

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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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Kiteworks logo

Content Governance, Compliance, and Protection

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Protect privacy and ensure compliance of all sensitive content sent via email, file share, automated file transfer, APIs, and web forms - with one platform.

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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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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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Confidencial logo
(0)

Cloud-based data protection and security solution

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Confidencial is a cloud-based document security solution that enables users to protect sensitive data with granular encryption controls.

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StrongestLayer logo
(0)

AI-native email security platform

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StrongestLayer’s AI Email Security leverages advanced Large Language Models to understand the true intent behind every message, instantly detecting and blocking sophisticated phishing, zero-day exploits, and BEC scams. Seamlessly integrated with Microsoft 365 and Google Workspace.

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OpenText Core Email Encryption​ logo
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Policy-based email encryption for compliance

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OpenText Core Email Encryption automatically encrypts sensitive emails based on customizable data loss prevention policies and content filters. The solution scans outbound messages in real time and applies encryption, quarantine, or blocking actions according to defined rules. It features a Best Method of Delivery engine that selects optimal delivery methods including S/MIME, TLS, or Secure Messaging Portal, and provides graphical reporting for compliance visibility.

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Stalwart logo
(0)

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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MeSign logo
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End-to-End encryption and digital signature app for emails.

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Provides email encryption, digital signing and timestamping service for your corporate emails.

Auto-configure email certificates, encrypt email message automatically by default with S/MIME standard.

Cloud and on-premise key management are both supported.

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Area 1 logo
(0)

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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iQ.Suite aaS logo
(0)

Enterprise email management & security solution for M365

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iQ.Suite aaS is a cloud-based enterprise email management and security solution for companies using Microsoft 365. It offers a comprehensive set of features including content-driven encryption, insider threat detection, wrong recipient protection, and more. iQ.Suite aaS offers malware and spam detection to minimize risk and secure emails from unauthorized access. Additionally, to ensure company policies are met, this solution can be used to apply business policies to email communications.

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