Here is a new way to reach Inbox Zero.
LinkedIn had a top article with the story of Tech Firm Implements 'Zero Email' Policy for internal emails. The claim in the story is that Atos, a French company, is going to phase out email for internal communication and shift to instant messaging and other more appropriate tools. The CEO is quoted in the article as saying he hasn't sent email in three years.
I guess this means we are starting to see whether we can live a life without email, as Luis Suarez has envisioned. And there is this discussion from Adam Britten about a conference topic along the same lines: Can a Workplace Survive without Email?