'For questions regarding Microsoft's webmail service, please use outlook.com as the tag. Questions on the desktop client are off-topic and will be closed. Other tags incorporating 'outlook' include: [outlook.com], [outlook.com-calendar], [outlook-365], [outlook-web-access] and there is some usage advice here: https://webapps.meta.stackexchange.com/a/4482/60716.
For questions regarding Microsoft's webmail service, please see outlook.com.
Personal information manager from Microsoft, available both as a separate application as well as a part of the Microsoft Office suite.
Although often used mainly as an e-mail application, it also includes a calendar, task manager, contact manager, note taking, a journal and web browsing.
Questions on the desktop client are off topic and will be closed.