Add external contacts to my address book

When you communicate with people outside of your organization (like partners or customers), add them to your organization's address book as shared contacts.

1. Sign in to the Exchange admin center. Use your Office 365 email address and password (your ITEGY-Distinctive Technology Services username and password won't work here).
2. Go to recipients, and then select contacts.
   
3. Select New >Mail contact.
   
4. In the new window, enter the the contact's info, and select Save.
5. The contact is now in the list. Select Edit.
6. In the new window, choose contact information, organization, and/or MailTip to add more details about the contact. Select Save after each option you update.
   

More info

• You can also add shared contacts to a distribution group.
• Learn more about distribution groups.