getapp-logo

App comparison

Add up to 4 apps below to see how they compare. You can also use the "Compare" buttons while browsing.

Software categoriesBlog & researchAbout us

GetApp offers objective, independent research and verified user reviews. We may earn a referral fee when you visit a vendor through our links. 

Top Rated Email Security Software with Open source - Page 6

Last updated: May 2026

1 filter applied

Features

Integrated with

Pricing model

Devices supported

Organization types

User rating

132 software options

FactorX.ai logo
(0)

AI-powered email security for modern threats

learn more
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.

Read more about FactorX.ai

Users also considered
Advanced Threat Protection logo
(0)

Ransomware attack, phishing & CEO fraud protection software

learn more
Hornetsecurity's Advanced Threat Protection software is designed to detect and protect enterprises from targeted attacks, ransomware, CEO & phishing fraud with features including a sandbox engine, URL scanning & rewriting, freezing, targeted fraud forensics, and more

Read more about Advanced Threat Protection

Users also considered
mxHERO for Legal QuickStart logo
(0)

Email security & productivity designed for legal firms

learn more
Protect outbound email attachments by automatically replacing them with secure links to your existing cloud storage service. No end-user effort or downloads required. Works uniformly across all devices. Minimize your risk to external email breaches and email mishandling.

Read more about mxHERO for Legal QuickStart

Users also considered
Agari Secure Email Cloud logo
(0)

Email security and cybersecurity software

learn more
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
StartMail logo
(0)

Email platform for end-to-end email encryption

learn more
StartMail is a privacy-first email service that keeps your inbox safe. It is designed for individual and business use. StartMail users can create an unlimited number of email aliases at no extra cost to mask their real email. Custom email addresses are available for businesses.

Read more about StartMail

Users also considered
LogValid logo
(0)

Real-time email verification solution

learn more
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.

Read more about LogValid

Users also considered
Topsec Managed Email Security logo
(0)

Software for managing and securing emails

learn more
Topsec's Managed Email Security service is a cloud-based solution designed to safeguard your organization's email system from a wide range of cybersecurity threats. With advanced email threat detection, targeted threat protection, and real-time monitoring, Topsec ensures that your critical data remains secure and your email continuity is maintained.

Read more about Topsec Managed Email Security

Users also considered