Thanks for the feedback!
So sorry that you're experiencing slowness. I haven't done any performance test on it as for the past few months its mostly been used by just friends and family.
I hope it is faster now.
Tbh, I'm not sure what else to build on top of it as when I built it, I just wanted a safe and private place to be able to curate newsletters without exposing my main email address and allow friends to view my subscriptions.
What do you think feels needs to be touched up? Is it the UI?