In this article, we are going to take a look at how to use mail merge in Outlook. Both options will be explained in this article. For the latter, we can use your contacts in Outlook or an Excel list. To create a mail merge we will need a Word document for the content and a list of contacts. Whether you need to send out a mass email to customers or employees, mail merge makes it easy to personalize the content and ensure that each email is tailored to the recipient. Mail merge is a powerful feature in Outlook that allows you to easily create and send personalized emails to a large number of recipients.