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Email Security
Page 3

Email Security Software with API (2026) - Page 3

Last updated: February 2026

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Features

API

Email Management(32)

Access Controls/Permissions(31)

Active Directory Integration(13)

Activity Dashboard(39)

Integrated with

Microsoft 365(12)

Microsoft Outlook(14)

Gmail(7)

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Free(21)

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Mac(23)

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Web-based(63)

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Small Business(57)

Non Profit(25)

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Freelancers(32)

Mid Size Business(55)

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63 software options

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Retarus

5.0

(1)

Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews

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.

Barracuda Incident Response

5.0

(1)

Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews

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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SafeGuard Cyber Security

4.0

(1)

Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews

Cybersecurity platform with NLU analytics

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SafeGuard Cyber Security is a cybersecurity platform that helps businesses protect their communications, employees, and data against social engineering attacks and other threats.

Read more about SafeGuard Cyber Security

Users also considered

iQ.Suite aaS

(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.

Abusix Mail Intelligence

(0)

Cloud-based email security platform

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Abusix Mail Intelligence is an automated, cloud-based protection suite that enables businesses and organizations to protect their sensitive data from cyber-attacks. It protects users' mail servers and customers' inboxes from spam by orchestrating and automating your full security response including detecting malware and virus through machine learning techniques.

Read more about Abusix Mail Intelligence

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Area 1

(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.

MeSign

(0)

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.

Agari Secure Email Cloud

(0)

Email security and cybersecurity software

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Agari Secure Email Cloud is an email security and cybersecurity software that helps businesses in finance, healthcare, retail, legal, and IT industry segments identify and prevent spear phishing, account takeovers, and email compromise-based attacks. With the incident response functionality, staff members can prioritize tasks and conduct attachments, URLs, and sender forensics-based investigations.

Read more about Agari Secure Email Cloud

Users also considered

LogValid

(0)

Real-time email verification solution

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LogValid enhances email security by verifying the authenticity of email addresses in real time. It detects and removes invalid, disposable, and spam emails, protecting your system from fraud, phishing, and other security threats.

Confidencial

(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.

StrongestLayer

(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.

mailbox

(0)

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.

Stalwart

(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.