Getting Blog-Posts in Brevo Newsletter Campaings

By coding a simple tool, I help a customer to move from Mailchimp to Brevo and reducing the price for a newsletter service by more than 50%. Since Brevo does not offer a good way to include blogposts into the newsletter by using a RSS-Feed (well there is a rather useless plugin/integration and some service in the business plan), I created a simple tool to do this. It reads a RSS-Feed, let the user pick some of its posts, takes a template (made in the template editor of Brevo, one of these ugly table based templates), makes some replacements in it, renders a preview, and outputs the html code containing the contents from the feed item. This code can be copied into the newsletter editor of Brevo.
Client happy.