Open Sourcing Superhuman, on Top of Gmail
I paid for Superhuman for years. If I am honest about what I actually used, it was keyboard shortcuts, the command palette, and split inbox. That is it. Thirty dollars a month for muscle memory.
Nothing against Superhuman. It taught me how fast email can feel. But after the Grammarly acquisition, the innovation slowed down. They tried to make AI the story, and meanwhile Gmail quietly shipped the same features natively: summaries, drafting, smart search. All of that lives inside Gmail now, for free, and it works better because Google owns the data.
So the calculus flipped. I did not need a replacement email client. I needed the ten features I loved, on top of the Gmail that already won.
I built Inbox Keys. It is open source, and it is on the Chrome Web Store.