In the Mail Merge Helper dialog box, click Get Data and select Use Address Book. The Use Address Book dialog box appears with the available address books listed under Choose Address Book. Select the Address Book you want to use as your data source. Word may prompt you to confirm the data source if Confirm Conversions is selected as an option. If you use an address book from Exchange, Word prompts you to log on to the Exchange services.
Word displays a message to set up the main document.
Click Set Up Main Document. Edit the Main Document Word displays the Envelope Options dialog box. On the Envelope Options tab, select the size of the envelope and the font to be used for the delivery and return address. The Printing Options tab should reveal the feed method detected by the default printer driver. Word then displays the Envelope Address dialog box.