Building Slack

An untitled invitation from Stewart appeared on my calendar one morning in the late fall of 2020.

In January 2020, a nasty bug swept through our NYC office.

Slack was getting too big.

“Starting three years ago, we started trying to run Slack as a public company.

On April 26th, 2019, Slack filed to take the company public.

Hello friends, First off, thanks for all the questions you sent in for our interview with Cal.

Listen on Soundcloud.

“If we can’t ship safely, we aren’t shipping at all,” Cal Henderson wrote in our #announce-devel channel.

One of the four big bets in Stewart’s Master Plan was to make Slack a network.

Eric Costello co-founded four products at two companies with Stewart, Cal and Serguei.

On the morning of November 2nd, 2016 we arrived to the office to find a paper copy of the New York Times on our desks.

Ali Rayl knew Slack’s customers better than anyone.

Backstage, Stewart vibrated with his typical charismatic energy.

We did many things fairly well at Slack.

[This post is about the day that Glitch failed, and how that failure created the opportunity to make Slack.