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Email Security Software with API (2026) - Page 3

Last updated: April 2026

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64 software options

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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FactorX.ai logo
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AI-powered email security for modern threats

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FactorX.ai is an AI-native email security platform designed for Microsoft 365 and Gmail. It uses real-time threat detection and behavioral AI to stop phishing, malware, BEC, and ransomware.

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Selzy logo

Affordable email marketing software

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Selzy is an intuitive email marketing platform that suits any business needs. It offers a wide range of integrations with your favorite tools, an easy-to-use drag&drop editor, and email templates for any occasion.

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Cisco Secure Email logo

Cloud-based email security tool for preventing cyberattacks

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Cisco Secure Email is a cloud-based email security software designed to help businesses of all sizes provide protection against malicious files, malware, ransomware, phishing attacks, spoofing, and other cyber threats. It enables organizations to streamline data loss prevention (DLP) and encryption processes to safeguard critical business information.

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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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Agari Secure Email Cloud logo
(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.

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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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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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LogValid logo
(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.

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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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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.

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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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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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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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