author_email

The WordPress Jekyll importer will save information about the original post author.

---
author_email: john.smith@example.com
---
Inconsistant Behavior

Other importers use a more YAMLly way of importing author information.

---
author: 
    name: "John Smith"
    url: "http://example.com/john-smith"
    image: "http://example.com/john-smith.png"
---