Adding a post to your newsletter using the Post embeds block
Create or duplicate a Newsletter Glue campaign.
Select the "+" icon at the top left to display the Newsletter Glue blocks
Select "Post embeds" by clicking and dragging the block to the right inside your newsletter campaign.
Search for the internal post title/headline that you've already published on your site.
Select the desired post. This will bring the story into your newsletter where you can format and adjust as needed from the block settings.
To make the post similar to the example above, select "Full" under "Table Width Ratio".