Once you have entered the information details of a contact, such as their address, company, phone number, and e-mail address, Outlook will then be able to assist you in sending these people e-mail, making phone calls, and generating letters to the contact. It helps store and organize information about people that are important to you.
You use it to keep information about your business and personal contacts.
The “Contacts” folder in Outlook is basically the same as an electronic Rolodex, or address book. A contact is someone important to your business or personal life that you want to keep in contact with using Outlook.