This hackathon sheds some light on the approach. There may be some better (more recent) discussions about exporting document content via emails.
I also have used this approach to support comprehensive CRM processes. So, for example, we are able to send newsletters designed in Coda documents complete with embedded images via email. The Send button dispatches the content via email without breaking a sweat; ergo - moving document content via email is simple stuff. Parsing it at the receiving inbox is also straightforward; storing it with tabular data is also straightforward.
