Barracuda Email Security Gateway - Barracuda's Email Security Gateway is a powerful antivirus filter specifically designed to identify and eliminate email-borne threats, stopping hazards before they reach the network.
EmailOctopus - Email marketing for less, via Amazon SES
Symantec Email Security.cloud - Symantec Email Security.cloud provides always-on, inbound and outbound email security against malware, targeted attacks, and advanced threats
MailChimp - MailChimp is the best way to design, send, and share email newsletters.
Cisco Email Security - Cisco Email Security protects against ransomware, business email compromise, spoofing, and phishing.
.meteoremails - Send cold emails for free! Free and open source project