Proton Mail for Business offers a secure and professional email solution trusted by 50,000 organizations. Built with end-to-end encryption and protected by Swiss privacy laws, Proton Mail ensures your sensitive information is safe from unauthorized access and data leaks. Whether you're a small business or a large organization, you can ensure regulatory compliance, reinforce client trust, and keep your communications safe. Easily migrate your team from Google or Microsoft, use your own email domain for your communications, and manage your schedule with Proton Calendar — all in a user-friendly, privacy-focused platform.
Learn more

Dependable cloud-based email hosting comes equipped with essential features like spam protection, antivirus safeguards, generous storage capacity, and accessible webmail options. It offers smooth integration not only with Outlook but also with a variety of other POP3 and IMAP email clients. For users who require substantial sending capabilities, a strong SMTP service is available, catering to responsible senders. In addition, an outbound relay service is provided, specifically designed for transactional emails, marketing initiatives, newsletters, and other varied applications. The infrastructure is built to handle high-volume senders efficiently, supporting dedicated email servers, clustering, and load balancing across multiple IPs. With a consistent monthly subscription, users can enjoy unlimited sending capabilities along with reputation monitoring features. Greatmail distinguishes itself as an email service provider (ESP) that prioritizes business-class email hosting, SMTP hosting, and dedicated email servers. Moreover, we develop tailored solutions for ISPs, software developers, and cloud architects, which include dedicated IP servers and load-balanced configurations across several servers to satisfy particular processing requirements. This dedication to flexibility guarantees that every client receives exceptional service that is customized to meet their specific needs and expectations. Ultimately, our goal is to empower businesses with reliable email solutions that enhance their communication efforts.
Learn more
hMailServer
hMailServer is a free and open-source email server specifically designed for the Microsoft Windows operating system. Its user base spans across the globe, encompassing internet service providers, various businesses, government agencies, educational facilities, and tech-savvy individuals.
Supporting standard email protocols like IMAP, SMTP, and POP3, it easily integrates with many existing webmail platforms. Furthermore, it offers a customizable spam protection system based on scoring and can be paired with virus scanners to rigorously inspect all incoming and outgoing messages for potential threats. This adaptability and robust feature set contribute to hMailServer's reputation as a trusted and effective email solution for diverse users. Most importantly, its wide range of functionalities enhances email security, making it a preferred option for many.
Learn more
FreeIPA
Manage Linux users and client machines within your network from a unified interface, whether via command line, web interface, or remote procedure calls. Enable Single Sign-On features across all your services and applications while implementing Kerberos-based authentication and authorization policies to protect user identities. Effectively oversee critical services like DNS, SUDO, SELinux, and autofs. The solution offers a holistic security information management framework that incorporates various elements such as Linux (Fedora), 389 Directory Server, MIT Kerberos, NTP, DNS, and the Dogtag certificate system, among others. This platform is founded on well-established open-source technologies and complies with standard protocols to guarantee both reliability and security. FreeIPA not only supplies a web interface and command-line tools for effective administration but also simplifies user management and bolsters system security in distributed settings. By adopting this comprehensive approach, organizations can not only uphold stringent security protocols but also ease the complexities associated with user access management. Furthermore, this integration allows for more efficient monitoring and control of user activities across diverse environments.
Learn more