Calendar, Contacts, Tasks

The Calendar, Contacts and Tasks are interconnected and linked to email. They can be fully utilized via the web interface or through the Outlook client in Windows or on macOS.

Some mobile apps can work with Calendar, Contacts, or Tasks at least partially.


There are user and global contacts. Global contacts are managed centrally, containing users, groups and rooms. Mail applications download the global address book, usually once a day.
User contacts are managed by the user himself – via the web interface and also via Outlook. User contacts are synchronized via Office 365.


You can create appointments, alerts or meeting requests, including meeting room reservations, in your Calendar. You can share your Calendar or view the Calendars of other people or rooms (if you have the appropriate rights).

  • Creating an appointment from an email – you will receive an email that has a specific appointment or meeting date in your text and you want to create an item on the Calendar according to it.

On-line descriptions:


The Tasks help you track and organize your own activities. For each task, you can set a start date, a reminder date, a completion date, a task status (not started, in progress, completed, waiting for others, postponed), completion percentage, or priority.

Different documents can be assigned to a task. You can also assign tasks to other people.

  • You can also use the demo version of with clear mobile applications to organize your own business. It is partially connected with desktop Outlook. For more information, see Getting Started with Microsoft To-Do.
  • The Planner application assigned to Office 365 Groups or to Teams may be better suited for managing team tasks.