Sahil frames the newsletter's actual launch as formalizing something that already existed rather than a from-scratch idea: before the first official Curiosity Chronicle issue, his Twitter threads were already being emailed out weekly to a following that had grown around them.

“went out to a few thousand people who had been receiving my tweet threads in email format each week”

The first newsletter issue went out to a few thousand people who were already receiving Sahil's Twitter threads by email each week, not to a cold list.

“went out to a few thousand people who had been receiving my tweet threads in email format each week”