What if you use MailGun or Sendgrid to receive forwarded email, then use your scripts to parse the invoices customers forward you, and offer the data back in va

What if you use MailGun or Sendgrid to receive forwarded email, then use your scripts to parse the invoices customers forward you, and offer the data back in various formats like Excel, Quickbooks, and JSON? I would pay $30/month for that. Even better if you wrote a Context.io filter to automatically start forwarding invoice-looking things to your system.