Start a new, blank document and save it with a name that ends with Main .
Open the Tools menu, choose Letters and Mailings , and select Mail Merge to display the Mail Merge task pane.
Click the Envelopes option button in the Mail Merge task pane, and then click Next : Starting document at the bottom of the task pane.
Keep the Change document layout option button marked , and click the Envelope options link.
INTRODUCTION
The general steps for merging envelopes are the same as for merging letters (although the details are somewhat different). Consequently, you'll find it helpful to practice a few mail merges with letters before proceeding with this task and the next. Also note that these tasks assume that you already have a data source, so you'll open an existing one rather than creating a new one.
In the Envelope Options tab of the Envelope Options dialog box, choose a different envelope size if desired (the default is a standard business envelope).
Click the Printing Options tab, make any changes, and click OK .
Your document is reformatted as an envelope. Click Next: Select recipients .
Leave the Use an existing list option button marked, click the Browse link, and continue to the next task.