TL;DR: Go check it out at starminder.xyz!
I've been using GitHub for a few years, and have starred 457 projects as of now. I have no real idea about what's in there.
Some time ago I thought it'd be neat if I occasionally received an email with a few of those projects, just as a "hey, you once cared about this" reminder.
So I made that.
Starminder actually lets you choose how many projects you want in this email, how often you want it (daily or a specific day each week), and what time of day you want it.
And that's it.
The repo is on GitHub if you'd like to contribute to it or follow its development.