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How to Mass-Produce Personalized Letters with Word Mail Merge

Tap each step to see how to mass-produce personalized letters with Word's mail merge.

  1. Prepare your recipient list in a spreadsheet

    Organize information that differs per person, like names and addresses, in a spreadsheet ahead of time.

  2. Choose "Start Mail Merge -> Letters" on the Mailings tab

    On Word's "Mailings" tab, click "Start Mail Merge" and choose "Letters."

  3. Connect your spreadsheet via "Select Recipients -> Use an Existing List"

    Choose the spreadsheet file you prepared earlier to link its list of names to the letter document.

  4. Insert merge fields, then output with "Finish & Merge"

    Use "Insert Merge Field" to place items like name or address where they belong, then use "Finish & Merge" to produce a personalized letter for every row in the list at once.

  5. Why it helps

    When you need to send dozens or hundreds of notices or invitations that differ only by name, connecting a recipient list lets you automatically generate a large batch of personalized documents instead of retyping each name by hand.

A clean spreadsheet is what makes the merge work

Mail merge pulls its personalized data directly from the column headers in your spreadsheet, so giving those columns clear, simple names like "FirstName" or "Address" before you begin makes them much easier to find and insert correctly as merge fields later. A messy or inconsistently formatted source list is the most common cause of a merge producing blank fields or mismatched data.

Preview before you commit to the full batch

Before running "Finish & Merge," the Mailings tab includes a "Preview Results" option that lets you page through a few completed letters exactly as they'll look for real recipients. Catching a misplaced field or formatting issue in that preview, rather than after generating the entire batch, saves having to redo hundreds of documents.

Frequently Asked Questions

Can I use this same method to print envelopes or labels instead?

Yes. Choosing "Envelopes" or "Labels" instead of "Letters" in "Start Mail Merge" lets you produce bulk envelope addresses or address labels from the same recipient list.

Can I save each finished letter as its own separate file?

Choosing "Edit Individual Documents" under "Finish & Merge" combines everything into one file first; if you need separate files, you can then split that combined document at its page breaks and save each part individually.