› articles › mail-merge-labelsHow to Create Mail Merge Labels in Word 2003-2019 & Office 365 Oct 09, 2020 · Hit the "Update all labels" button and then "Next: Preview your labels." Check that your data copied over correctly and you're happy with the final result. Click "Next: Complete the merge." Close the wizard and save your document. Microsoft Word 2019/Office 365 Mail Merge. Open on the "Mailings" tab in the menu bar. Click "Start Mail Merge."