Mimecast Gateway - Mimecast Gateway is a SaaS-based email security solution that uses sophisticated, multi-layered detection engines and intelligence to protect email data and employees from malware, spam, advanced threats and zero-day attacks.
Cakemail - Email marketing and transactional emails that deliver. Try it for FREE!
dmarcian - Safeguard your email from abuse
Hatchbuck - SMB sales and marketing software
Hornetsecurity - Hornetsecurity offers you comprehensive, integrated managed e-mail security services.
Salesfusion - Salesfusion provides an easy to use marketing automation platform that allows sales and marketing teams to be successful.