Discovered due to #612.
Currently annotated.groovy grabs an article out of fedora and extracts these email address(es) as follows:
def authorList = article.front.'article-meta'.'author-notes'.corresp.email.list()
I took a look at what it would take for the MigrationScript (migration.groovy)/ingestion-code to include this additional information, but I don't really see an appropriate mapping into the models we currently have. I looked for a place to shove it in some foaf representation somewhere, but I don't think there is a mapping between any existing author/creator/editor, etc. foaf record and this email address(es).
It probably would really help to look at sample articles to see how the path used above by annotated.groovy is stored in actual articles.
The solution here isn't obvious and seems unlikely for 0.8. For now, annotated.groovy can still pull the relevant information (email addresses) out of fedora.