Data payload for notification emails.

Can you awesome folks add a text/json multipart to the outgoing emails, please ?

{
"event": "new-issue",
"id": "JRA-60612",
"summary": "Data payload for notification emails.",
...
}

If not a multi-part then somehow encoded in the HTML, so that it can be parsed out without javascript itself. e.g as a base64 string in a display:block section.

This issue is mentioned in the README for ImapDigester