Add ability to download incoming/bounced/etc. email

Continuing the discussion from How to export sent email as eml/msg file?:

I daresay the vast majority of people do not know this.

To make people’s lives easier, would it be a good idea to add a convenient “Download email” button to various places the admin can see emails:

  • the “Incoming Email” viewer on a post
  • the Email logs (/admin/email/…)