I don't shop from Ocado anymore but maybe I should start doing that again. The reason I only tried it once was that I wasn't able to find as many products on their website as I needed plus if you're not a big family it often doesn't make sense to buy too much fresh food in one go.
They're cleverly keeping me in check by sending sporadic emails very rarely about changes to their features and other bits and pieces. I'd call it "spam I don't mind" and I don't get annoyed when I get them because they're so rare. And here's one that arrived the other day which I actually appreciate a lot. Basically, they've gone out of their way to improve their image on the environment to send me another email. It's well phrased, humane, well layed-out and informative.
Keep up the good work guys!