Error message when you try to mail merge to electronic mail in Word

When you try to mail merge to electronic mail in Microsoft Word 2002 or in a later version of Microsoft Word, you may receive an error message that is similar to the following:

This issue may occur when the mail merge feature uses the plain text or attachment mail format.

To work around this issue, use the HTML mail format.

To use the HTML mail format, follow these steps:

1. Run the mail merge feature as you usually do.
2. In Step 6 of 6 in the Mail Merge task pane, click Electronic mail.
3. In the Merge to E-mail dialog box, click HTML in the Mail format box, and then click OK.