Mail Merge Step by Step Mail Merge is a handy feature that incorporates data from both Microsoft Word and Microsoft Excel and allows you to create multiple documents at once, such as letters, saving you the time and effort of retyping the same letter over and over. Here is an example of how to use it to create a letter thanking people who File Size: KB. In Microsoft Office Word and in earlier versions of Word, point to Letters and Mailings on the Tools menu, and then click Mail Merge Wizard. In Microsoft Office Word , click Start Mail Merge in the Start Mail Merge group on the Mailings tab, and then click Step by Step by Mail Merge Wizard. Under Select document type, click Letters.
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