exchange-client

AquaMail is an email app for Internet and Exchange mail, for Android 4.0.3 and higher.

eM Client is a full featured e-mail client with a modern and easy to use interface. eM Client also offers calendar, tasks, contacts, notes and chat.

Foxmail is a free POP3 and IMAP4 e-mail client in English and Chinese for Windows systems.

Streamline emails, calendars, contacts, and task management with a smart inbox prioritizing critical messages. Includes calendar scheduling, third-party app integration like Facebook, Dropbox, and Trello, and support for Microsoft Exchange, Outlook.com, and Gmail, ensuring efficient task and email handling.

Evolution is a personal information management application that provides integrated mail, calendaring, address book and task list functionality.

TypeApp is an all-free, beautifully designed, universal email app, capable of managing unlimited number of mail accounts from various providers, allowing for smart push notifications while enabling personalization across multiple email accounts.