I'll update this if I find more. For now, this seems to be a partial solution. It's a Gmail add on (except I don't use Gmail) that adds reminders. The options when setting reminders include cancelling it if someone replies, and to remind everyone in the thread. If you combine those two, it seems like — if you use Gmail's web client and have $23/month you're dying to get rid of — a decent way to add the feature. Source: over 1 year ago

Nope, just someone who likes vercel's design, ux/ui :). What's great about this is that not only this is a next step in AI generated websites, this is actually shipped and much better than the overpromised thegrid.io vapourware. https://thegrid.io/. - Source: Hacker News / 8 months ago

The Grid is a website builder that utilizes AI technology to streamline the design process according to your content and preferences. Employing machine learning algorithms, it thoroughly examines your content. Generates customized layouts and design elements. The result is visually captivating websites that are easy to navigate, all accomplished without the need for intervention. - Source: dev.to / 10 months ago