Author here.

Happy to answer any questions or take feedback about this post.

Interesting to distinguish between email as a message, and email as a dialog.

These techniques make good sense an email is a message of actionable information in a process.

But if an email is a literate artifact of socratic discourse, the techniques are relevant but also seem too simplistic.

As to the subject of what makes for good writing and compelling discourse.

Today enormous capital is on the hood looking to automate human affairs, trailing a long history of affluence seeking to robotize, in the sense of Capek's Rossum's Universal Robots, human beings for profit.

The author has qualified his treatment with the term "effective", but left the antecedent of "effect" hanging in the tedious realm of procedural business communication. Isn't that all handled by AI now?

Is the author aspiring to train robots on templates for information exchange, or is he seeking to develop styles of composition for literate discourse?

The currently documented email techniques cover the former. The more human topic is the latter.