[halflings]

Email. You just went back to email.

Like many of the people in the comments of your article, I am struggling to see how this is any different from traditional emails. The only difference is that these conversation threads are public/discoverable, and not only sent to certain people... but most companies already have this (via groups/team mailing lists/confluence/...).

[amix]

We still use email, but not for internal team communication. We have a help article of why Twist is radically different than email https://twist.zendesk.com/hc/en-us/articles/115003654589-Twi...

[halflings]

I would strongly recommend reading this article:

https://blog.codinghorror.com/discussions-flat-or-threaded/

Flat discussions make much more sense, especially for emails. Gmail and most email clients are focusing on flat discussion threads, which are much easier to follow.