Two of Slack's original eight employees have spent more than two years blogging Slack's history, one post at a time, and their newest post fills in the part of the Salesforce story outsiders never saw. "About" describes Building Slack as a project by Ali Rayl and Johnny Rodgers, and "Salesforce – Part Two" , published October 23, 2026, covers the years after the deal closed.

Its sharpest detail comes from Stewart Butterfield, who says he had about an hour with Marc Benioff before the sale was announced: "My last meeting with him was cut short because McConaughey arrived." Read alongside the rest of the archive, the post turns a familiar acquisition story into a fuller one, told by the people who built the product and with founders reviewing their notes.

Why Slack's Early Employees Are Talking Now

Building Slack exists because its authors are free to write it. Rodgers, a former principal engineer , says in "Salesforce – Part Two" that he left in spring 2023 after 11 years.…