Work for this is being done as a Quarto extension in the `https://github.com/rich-iannone/quarto-email` repository (private for now). The email body will be in a div with class `"email"`.

To make this work with the Connect emailing system, the main goal, the filter needs to generate a JSON file in the working directory with specific key names. Connect will be updated to watch for this file; this is close to the blastula/Connect model where R Markdown metadata is captured when certain key-value pairs are present. 
rich-iannone
2023-03-24T13:33:24Z
allenmanning
epic email
v1.4
open
Email Integration
https://github.com/quarto-dev/quarto-cli/issues/4946