Prepare your Excel data source for a Word mail merge
https://support.microsoft.com/en-us/office/prepare-your-excel-data-source-for-a-word-mail-merge-2d802b6b-a3a3-43e5-bb76-2cac7c68673e
WebStep 1: Set up your data source in Excel. If you're using an Excel spreadsheet as your data source for a mail merge in Word, skip this step. If the data source is a .txt or a .csv file, use the Text Import Wizard to set up your data in Excel. After you successfully import a .txt or .csv file, go to Step 2.
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