I have a separate folder on my system for all emails sent or received relating to Voices of Disbelief. I'm not counting tangential discussions of the project with uninvolved people; I mean strictly emails that are the equivalent of business letters - planning with Udo, discussions with publishers and agents, approaches to potential authors, discussions with the actual authors (including electronic manuscripts sent back and forth in the editing process), and so on.
So far, this adds up to 1614 emails - some quite brief some very long and complex. Who says that editors don't work hard? Well, maybe no one says that. Still ... I was astonished to see just how many it came to. And there's a long way to go yet before we see it into print.