Barracuda Email Security Service
Trustwave Secure Email Gateway
Mimecast Secure Email Gateway
Appriver
Microsoft Exchange
Egress Switch
Cryptshare
StayPrivate
ZeroSpam
SpamTitan
Sanebox
MailCleaner
Vade Secure
Hornetsecurity Spamfilter
The Swizzle
Symantec Email Security.cloud
Barracuda Email Security Service ZeroSpamTrustwave Secure Email Gateway - Trustwave Secure Email Gateway helps protect your email environment against modern threats such as malware, ransomware and phishing, and helps prevent loss of sensitive corporate data.
SpamTitan - Comprehensive Email Protection. 99.99% Spam Detection. Blocks phishing, viruses, malware and other email threats.
Mimecast Secure Email Gateway - Prevent targeted email-borne attacks with Mimecast Secure Email Gateway for cloud-based anti-virus and anti-spam protection.
Sanebox - SaneBox is a cloud-based service that allows users to filter and manage their emails.
Appriver - AppRiver is an email and web security company, develops SaaS-based anti-spam, hosted exchange, email encryption and web protection solutions.
MailCleaner - Cloud & on-premise anti spam software for businesses