Parsing Incoming Emails into Structured JSON with Node and AI

Email is still one of the most common “integration APIs” in business and that's why I made https://www.parseforce.io Invoices. Shipping notices. Order confirmations. Supplier updates. And in many cases… email is the only integration point you get. The problem? Emails are messy. Layout changes Forwarded threads HTML formatting Different senders, different structures Slight wording tweaks that break everything Yet inside those emails is structured data you actually need. The Regex Trap Most teams start with regex or template-based parsing. It works at first: const match = emailBody.match(/Total:\s*\$([0-9,\.]+)/); Then one day: “Total” becomes “Amount Due” The currency moves The supplier updates their template Someone forwards the email And your parser breaks. You’re now maintaining parsing logic instead of building product. A Different Approach Instead of matching patterns, define the schema you want: { "invoiceNumber": "string", "items": [], "total": "number", "currency": "string" } Th