Shift - Shift is the ultimate email client for managing Mail, Calendar, Drive, Slack, Asana, Jira, Evernote, and all your other favourite apps
Thunderbird - Thunderbird is a free email application that's easy to set up and customize - and it's loaded with great features!
StarGarden HCM - StarGarden HCM is an integrated HR and Payroll software with workflow automation tools.
Microsoft Outlook - Organize your world. Outlook’s email and calendar tools help you communicate, stay on top of what matters, and get things done.
Motif - Stop picking stocks. Invest in Ideas.
eM Client - eM Client is a fully-featured email client for Windows and macOS with a clean and easy-to-use interface. eM Client also offers features for calendars, tasks, contacts, notes, and chat.