Microsoft Mail and Calendar Alternatives

Mail is designed to let you manage your email quickly and effortlessly. Its interface is based on conversations, so you can read an entire discussion without having to click from message to message.

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

Merkuro is a calendar and contact application that allows you to manage your tasks, events and contacts. Merkuro supports both local calendars as well as a multitude of online calendars: Nextcloud, Google® Calendar, Outlook®, Caldav, and many more.

The Bat! is a secure email client software, built to protect your correspondence against third-parties.

The fastest email experience ever made.

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.

No-frills, easy to use, easy to maintain Email client for Android based on the JSON Meta Application Protocol (JMAP).

Mac IMAP email client featuring keyboard control, Markdown email composition, advanced search capabilities, smart mailboxes, automatic signature handling, cryptographic options with OpenPGP/S-MIME, tagging, multiple notifications, and customizable layouts including widescreen.

Sup is a console-based email client for people with a lot of email. It supports tagging, very fast full-text search, automatic contact- list management, custom code insertion via a hook system, and more.

Orbit Communicator is a client server application that's designed to be deployed locally on your desktop machine. It currently provides an integrated email / calendaring experience based on external IMAP mail sources.