Sending email with daily HN frontpage articles


I want to create a digest email where I get daily HN frontpage artivles everyday. I built the flow and it works. But it sends me 1 email for every HN article. Is there any chance to loop or map each item in send email node so it will build 1 digest email from all hackernews articles?

Something similar to that came up already a few times in the forum, so you should be able to find something there.
Apart from that can you also find an example on how to combine multiple items into a single one here:

Hope that is helpful!