Everyone's moaning about "aquihire and shut down" but it would make ZERO sense for Slack to do that in this case. Astro was in no way a competitor to Slack. Seems to me like they're going after Gmail for Business.
But they did acquire and shut it down. They may have future plans at some point but it has been (or will be very soon) shut down
> On Wednesday October 10, we’ll shut down our Astro apps for Mac, iOS, Android, Amazon Alexa, and Slack. As of today, we’ve also disabled signups of new users.
Well they are doing that, doesn't mean it's because of competition, maybe it was just for the talent and keeping the app up isn't worth their time and they would rather the newly-acquired employees focus on something closer to native Slack. Similar to what they did with Screenhero
The team is focused on making the experience of working in email and Slack seamless. Unfortunately, we're not able to support the existing products. Apologies about any inconvenience this causes.
Edit: Apparently they did shut it down...