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.
Add valid email submissions to the table and reply with their IDs.
Turn emailed entry requests into database rows, with a reply that confirms the ID or tells the sender what to fix.
Add valid customers and update existing entries by ID.
See new and changed customers in your list, plus a report of entries needing your review after a JSON export.