eM Client is a Windows based e-mail client for sending and receiving e-mails, managing calendars, contacts, and tasks. Developed by eM Client Inc.
License: Free Personal
Polymail is designed for users who prioritize email tracking, collaboration, and third-party integrations, making it ideal for teams and productivity-focused individuals. eM Client, on the other hand, excels in offline functionality and a comprehensive set of email management tools suitable for individual users who need a robust email client with calendar and task integration.