LLMs and Buttondown

I say this sincerely because I am a big fan of Buttondown and how Justin runs the business—this couldn’t have happened to a nicer guy: Our month-over-month growth rate in Q1 2026 was double our growth rate in Q4 2025. Buttondown has, roughly, grown a little less than 2x every year of its existence; this -- its eighth year — is poised to shatter that, if trends hold. Almost all of that incremental growth, meaning the growth in addition to our historical trend, I attribute to LLMs. We ask people when they sign up what brought them here, and an answer that went from surprising to banal to overwhelming over the course of Q1 was: an LLM. Users of all stripes cite an LLM as the reason that they ended up at Buttondown's front door. You should click through for the whole post because he explains why he thinks this happened: People have asked why I think we have been the beneficiary of this genre of growth. There is one fairly interesting reason: we have accidentally built a very LLM-friendly…