Install Export Emails to Excel, CSV, or Google Sheets from Chrome Web Store.
How to get started is explained in here.
Articles Tagged: Google Sheet
How to export all email messages in a label to Google Sheets
Export Emails to Excel, CSV, or Google Sheets can export all emails in a label to a spreadsheet.
The setup is simple: 1) select label and chose “Save label to Google Spreadsheet” 2) chose options 3) done.