S Hetjens

This plug-in adds the post thumbnail of articles to the RSS and Atom feed via Media RSS (MRSS) specification. Media RSS was 
invented by Yahoo as an extension to RSS feeds used for syndicating multimedia files (audio, video, image). This 
plug-in adds the post thumbnail defined by author of the article to RSS and Atom feeds of the blog. This plug-in 
activates the post thumbnail feature of WordPress, if the theme is not doing it. It is enough to activate the plug-in 
to work, it has no configuration parameters.
MediaRSS is a nice addition to your blog if you want to syndicate your content to other platforms. More and more 
platforms and RSS feed readers support it. The Notes App of Facebook recognize the post thumbnail and displays it in 
every newsfeed item.

Hetjens MediaRSS

This plug-in adds the post thumbnail of articles to the RSS and Atom-Feed via Media RSS specification.

ferventsolutions

Feed Excerpts For Divi is a simple plugin for the Divi Theme by Elegant Themes. This plugin provides excerpts for the Blog Post Feed when the Feed is set to show the Summary instead of Full Text.
WordPress filters out shortcodes when it is set to Summary, which leaves the feed content empty for posts using the Divi Builder. This plugin resolves that by generating an excerpt from the first Text Module on the post where the Divi Builder is enabled.
Sample RSS Feed: (http://feeds.feedburner.com/ferventsolutions/feed-excerpts-for-divi)
Contribute on GitHub: https://github.com/ferventsolutions/feed-excerpts-for-divi
NOTE: This plugin is not necessary when using Full Text for the Feed

Feed Excerpts For Divi

Enable excerpts in the Blog Post Feed for posts that use the Divi Builder Text Module

Hetjens MediaRSS vs Feed Excerpts For Divi