Fantastical 2 - Fantastical, the Mac calendar app you'll enjoy using. Quickly create new events with natural language input and more.
Thunderbird - Thunderbird is a free email application that's easy to set up and customize - and it's loaded with great features!
Google Calendar - Spend less time managing your day & more time enjoying it
Gmail - Gmail is available across all your devices Android, iOS, and desktop devices. Sort, collaborate or call a friend without leaving your inbox.
Itsycal - Itsycal for Mac. Itsycal is a tiny menu bar calendar. If you want, it will display your events as a companion to the Mac Calendar app. You can also create and delete (but not edit) events. Download Itsycal for macOS 10.
ProtonMail - Secure email with absolutely no compromises. Get your free encrypted email account today.