How does the add-in for Microsoft Outlook work?

The add-in works as an integrated feature in Microsoft Outlook. You can print address labels for the current contact, a group of contacts, or all the contacts in your database. Select a contact or contacts within Outlook and click on the LabelWriter icon located on the Outlook toolbar.  

With DYMO Label Software (DLS) version 8, you can choose to display Outlook contacts on the Address Book tab. 
Click on the Address Book tab and select Use Outlook Contacts from the Address Book drop-down menu.