How Mail Merge Works
Mail merge works by linking a database to your document.
The database contains the unique elements (Sue, Jack, Peggy, etc.)
and the document is your letter, invoice, label set, or another file.

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For example, say you want to write a holiday letter and send it to 20 people.
An existingExcel spreadsheetgives you even greater flexibility with your data.
If you only have Word, you’ve got the option to still use the mail merge feature.
Word has the ability to create its own fully customizable data source.
Setting Up a Mail Merge
A mail merge may seem complicated and complex.
That’s fewer than preparing your document manually would take and with much less time and hassle.