Rss2email should use the “content” field for the body of an email message in case the feed item is missing its “description” field. See [example feed here](http://comicfeeds.chrisbenard.net/view/dilbert/default). See [source here](https://github.com/cmbrandenburg/rss2email/blob/83da05bbb614ac4077ab79f9d85ce2a22a610429/command_run.go#L109).