Customizable Reddit summary emails

Hello IH, I recently made this: https://orangered.io/

I started with a simple idea of making a 'curated Reddit,' and ended up hacking this together over a few weekends. Select your favorite subreddits and get a daily or weekly summary of them emailed to you. It's completely automated, written in Python and running on Google Cloud.

Would love feedback about how to improve this and ideas for where to take it from here. Thanks for checking it out!