cloudHQ can create a list of email addresses from all emails in a Gmail label. It’s easy:

  1. Open the wizard here: https://www.cloudhq.net/sheets_wizard
  2. Select Parse, export or back up emails from your personal Gmail or Google Workspace account to a Google Spreadsheet.
  3. Scroll down and select Email List Builder:
  4. When prompted, select the Gmail label you want to use:
  5. The job will start, and a spreadsheet with all your contacts will be created: