As a user, I want to see the full name of a given poster when I receive an e-mail notification of content that person created, so that I can better associate the e-mail notification with the people I know on the Discourse site itself.
Rationale: When full names are enabled on the site, naturally, you see them above each post. However, the e-mail “From” field is structured like “
userid <email@example.com>”. If
userid was replaced with the full name, it’d match the user experience on the web.