Recently daily.dev introduced a new feature called "Weekly Digest" which is a email that includes the most relevant articles from the last week that users misse

Recently daily.dev introduced a new feature called "Weekly Digest" which is a email that includes the most relevant articles from the last week that users missed and it is a great way to catch up with the news in dev world. With all that good stuff comes a lot of complexity. In this "Under the Hood" blog post we will explore how we implemented this feature and what were the challenges we faced while trying to send more than a million emails a month.