GlockApps - G-Lock Apps is an interesting tool that might seem simple to some, but is quite essential to most online marketers.

Proofpoint - Proofpoint provides cloud-based email security, e-discovery and compliance solutions for companies to protect sensitive business data.

dmarcian - Safeguard your email from abuse

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.

Folderly - Folderly is an all-in-one email deliverability platform to supercharge your email performance. Locate, solve, prevent email deliverability pitfalls, and ensure that your emails reach the Inbox folder.

Maool Email Editor - Maool Email Editor : Create beautiful emails in less time with no coding knowledge.