Check forms for missing details, return them for correction. Every one is ready to run, and you can adjust it in plain language.
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.