The Email Reader plugin allows users to preview the content of *.eml email files directly within Obsidian's Preview mode, similar to embedding an image file. Instead of displaying a button that opens the email in an external app, this plugin renders the email content inline within the note. Users can also customize the dimensions of the email frame for better viewing. This is especially useful for keeping email content visible and organized in notes without altering the raw content. The plugin provides a seamless way to integrate emails into the note-taking workflow.