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Emi Miyagawa
Emi Miyagawa

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How I Reduced Email Processing Time by 80% Using Google Apps Script

Context

Back-office operations required manual email creation for each case (~2–3 minutes per email).

Problem

  • Repetitive copy-paste
  • Formatting inconsistencies
  • No scalability for batch processing

Solution

  • Structured input via Google Sheets
  • Automated draft generation using Google Apps Script
  • Draft-based approach to allow human validation

Result

  • Reduced time to <30 seconds per email
  • Enabled batch processing (30–50 emails/session)
  • Improved consistency

Trade-offs

  • Not fully automated (manual review required)
  • Prioritized accuracy over full automation

Key Takeaways

  • Automation should balance control and efficiency
  • Draft-based systems are effective in non-perfect data environments

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