Ask HN: Are you powerless? What would you switch to if you quit email?

(some context: https://news.ycombinator.com/item?id=14143669)

According to PG's 2012 essay, the way for email to be replaced is through a todo list used by powerful people. As if the powerless stand no chance to put a dent in email.

If you're powerless and are reading this, what would you switch to if you were to quit email?