In Outlook, an item is the basic element that holds information, such as an email message or calendar event. Items are used to send and view emails and organize information, such as tasks and contacts.
Compose an email.
Add an appointment to your calendar.
Schedule and invite others to an appointment, or reserve resources such as a conference room.
Enter information about a person, including their name, company, job title, and email address.
Create a collection of contacts that allows you to quickly send mass emails.
Enter to-do items that can be tracked until completion.