Continue writing your letter and inserting merge fields as needed. Make sure to occasionally use the “Preview Results” button to make sure your merge is going as planned. If one of your customers is missing information for a merge field, a blank space will be displayed instead of data.
When you’re finished, click the “Finish & Merge” option on the right-hand side of the ribbon. This will display options for executing your mail merge, whether that be emails via Outlook or printing and mailing letters.