If you would rather do this using json and a command line tool: https://github.com/lambdal/envois https://github.com/lambdal/envois That's a FOSS utility I've

If you would rather do this using json and a command line tool: https://github.com/lambdal/envois https://github.com/lambdal/envois That's a FOSS utility I've been working on for the past two years. I use it for all of my invoices. You can create your invoices like this: ./scripts/envois < scripts/invoice.json > output.html