Google Drive is Google's file sync app that lets you store all of your files online alongside your Google Docs documents, and keep them synced with all of your devices.
Prepare API tables for review with missing values clearly marked.
Your teammate gets a shared spreadsheet and matching CSV, with missing values called out instead of buried in raw JSON.
Share verified database rows for monthly analysis.
Get a dated CSV and row count in your shared folder every month, or an error note explaining why the export stopped.