Best On-Premises Email Clients

SmarterMail is the ideal Microsoft Exchange alternative. It’s the only business email server on the market that offers native support for Exchange protocols: MAPI, EWS, and EAS, without requiring any additional software or plug-ins for Microsoft Outlook or other desktop or mobile clients. It delivers all the features of Exchange at a fraction of the cost. SmarterMail also includes audio/video group chat and Online Meetings for team collaboration at no extra charge. Its newest feature, the SmarterMail Marketplace, enables seamless integration with platforms like OnlyOffice, Collabora, and AI tools such as OpenAI’s ChatGPT. Available for both Windows and Linux, SmarterMail has lower hardware requirements, superior stability, and reduced maintenance costs. It’s the perfect solution for businesses of any size or industry seeking Exchange-level functionality, without the high costs.

OpenText GroupWise is a secure, enterprise-grade messaging and collaboration platform that combines email, calendaring, contacts, and scheduling into a single, flexible system. It is built for organizations that require strong security, compliance, and reliability across highly regulated industries such as government, education, utilities, and healthcare. The platform enables teams to customize the user interface, integrate with systems like Microsoft Exchange and Active Directory, and centrally manage contacts, address books, and shared calendars. GroupWise includes intelligent scheduling tools, travel-time adjustments, and collaboration features that help streamline workflows and improve daily productivity. Its security measures—such as multifactor authentication, encryption, and gateway protection—ensure that sensitive communications stay protected.

Integrate social collaboration, messaging and business applications into a single workspace. HCL Notes is the email client software that gives teams access to email, calendar, and contact management capabilities, and seamlessly integrates other collaboration tools and HCL Domino business applications. With an improved user experience and enhancement of essential mail features, HCL Notes transforms your everyday email into an operational center and becomes even more essential to how your team’s work. Integrate social collaboration, messaging and business applications into a single workspace with Notes. Now, with an improved user experience and enhancement of essential mail features. From leading logistics companies to powerful banks and fashion houses, thousands of the smartest businesses in the world rely on Notes to help run their everyday.