Vade for Microsoft 365 - Vade for Microsoft 365 is a top-notch email security solution that is specifically aimed to help MSPs protect their networks from adversaries.

SpamTitan - Comprehensive Email Protection. 99.99% Spam Detection. Blocks phishing, viruses, malware and other email threats.

Libraesva Email Security Gateway - Libraesva Email Security Gateway provides enterprise email protection to assist small to large-sized businesses and enterprises to prevent outside attacks on their network.

Sanebox - SaneBox is a cloud-based service that allows users to filter and manage their emails.

Websense Email Security - Websense Email Security is a powerful email protection tool that helps you strengthen the security of your network.

ZeroSpam - Cloud email security & anti-spam solution