Outlook 2019 is an email software program developed by Microsoft. Outlook for Windows is part of the Microsoft 365 suite (formerly known as Office 365) but it can be downloaded independently. This email client communication program makes it easier for you to view, store, and organize all your messages. The program has also taken a cue from another Microsoft 365 program - Word. Outlook can now read your messages aloud to help you understand the message you’ve received.