Mail Merge API

Generate multiple personalized documents from a single template. Upload template + data file, get a ZIP with all generated documents.

Features

DOCX Templates - Use {{placeholder}} syntax
CSV or JSON Data - Flexible data input
PDF or DOCX Output - Choose your format
ZIP Download - All documents in one file
Unlimited Records - Process any number of rows

Quick Example

curl -X POST "https://api.chargedapi.com/generate/batch" \
  -H "X-API-Key: your_api_key" \
  -F "template=@letter.docx" \
  -F "data_file=@recipients.csv" \
  -F "output_format=pdf" \
  --output letters.zip

# CSV format:
# name,email,amount
# John,john@example.com,$500
# Jane,jane@example.com,$750

3 credits per batch

Use Cases

Mass Mailings

Generate personalized letters for all recipients

Contracts

Create customized contracts from templates

Reports

Generate personalized reports in bulk

Start Mail Merge

50 free credits to get started