Toolsley PGPigeon - Simple but powerful OpenPGP-compatible message encryption webapp.
Mimecast Secure Email Gateway - Prevent targeted email-borne attacks with Mimecast Secure Email Gateway for cloud-based anti-virus and anti-spam protection.
DeliverySlip - DeliverySlip helps simplify, secure, and expedite the burdensome elements of online collaboration...
FortiMail - Fortinet Email security is designed to block ransomware, phishing, and other cyber threats seeking entry via incoming email and outgoing messages don’t improperly leak sensitive data.
Lockbin - Lockbin is a web application for sending private email messages and files.
Proxmox Mail Gateway - Protect mail server against spam, viruses and malware with Proxmox Mail Gateway security for businesses, government, education and non-profit organizations.