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Mail Merge Document Builder

Turn CSV records and a text template into personalized Word documents, HTML letters or text files with missing-field checks and batch ZIP export.

CSV + templatesDOCX · HTML · TXTPreview every recipient

1Add your CSV records
2Write a reusable template
3Preview & export documents

Open CSVCSV records (first row contains field names)

2 · Your document template

Quick template

Document titleDocument body

FontFont sizePaperFilename template

Save or reopen a project

Open project

Projects include recipient data. They are saved only when you download them.

Load records or try the example.

Your personalized document preview will appear here.

Reading preview only. Your Word editor determines final pagination and available fonts.

Edit current record

Recipient validation & selection

How to use Mail Merge Document Builder

Paste or open a CSV, select its delimiter and Load records. Column names must be unique. The sample includes one missing date so you can try validation.
Write a document title and body. Click a field button to insert its placeholder at the cursor, or type an exact header inside double braces.
Select a recipient to preview the personalized document. Open Edit current record to correct that recipient’s data. Review empty fields in the selection table.
Choose font, paper and output format. Download the current record or selected records as a ZIP. By default, records with empty template fields are skipped.
Save a project to keep the CSV, template and layout together. HTML can be printed from your browser; DOCX remains editable in a compatible word processor.

Limits and supported output

Up to 200 records, 50 columns, a 1 MiB CSV and 20,000 template characters. Templates are plain text with {{field}} placeholders. No emails are sent; existing Word templates are not imported. Review downloaded Word pagination in your editor.

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Using Mail Merge Document Builder

Turn CSV records and a text template into personalized Word documents, HTML letters or text files with missing-field checks and batch ZIP export.

Paste or open a CSV, select its delimiter and Load records. Column names must be unique. The sample includes one missing date so you can try validation.
Write a document title and body. Click a field button to insert its placeholder at the cursor, or type an exact header inside double braces.
Select a recipient to preview the personalized document. Open Edit current record to correct that recipient’s data. Review empty fields in the selection table.
Choose font, paper and output format. Download the current record or selected records as a ZIP. By default, records with empty template fields are skipped.
Save a project to keep the CSV, template and layout together. HTML can be printed from your browser; DOCX remains editable in a compatible word processor.

Example

Three invitation records are loaded. Alex and Sam have complete information; Lee has no date and is skipped by default.

Questions & answers

How do placeholders work?

Use exact CSV header names inside double braces, such as {{name}}. Field buttons insert these at the template cursor. Missing or empty fields appear in the validation report.

Can I save my work?

Download a project JSON containing the CSV, template and settings. There is no automatic browser storage. Anyone with that project can read its data.

Can I download all letters at once?

Yes. Build a ZIP of numbered files in DOCX, HTML or TXT format. You can also download the currently previewed record.

What are the limits?