Important: By February 28, 2017, Office 2013 version Office 365 ProPlus is no longer available for installation with an Office 365 subscription. Microsoft will no longer push any updates to Office 2013 suite of applications. Please see the following document for further details: Office 365 - Microsoft Office 2013 path to retirement.
Microsoft Outlook 2013 is an email and calendar client that's available as part of Microsoft's Office suite. It is part of the Office suite for Windows and can be used to view email, calendar, contacts, and more.