This is embarassingly sloppy, but I agree with the kernel of the message. Microsoft says Google "goes through" your email to target ads, whereas outlook.com on

This is embarassingly sloppy, but I agree with the kernel of the message. Microsoft says Google "goes through" your email to target ads, whereas outlook.com only "scans" your email for spam filtering. This is a valid contrast, destroyed by the bullshit phrasing. The important difference for me is that spam filter criteria are common to 99% of all recipients. My personal set (if google even has personal blacklists) is not that interesting. Valuable advertising keywords are much more personal, and a) can be used by the advertiser, along with other metadata, to glue together a profile about me that is quite personal (and unreviewable, unfixable, probably incorrect in annoying ways), and b) are almost certainly retained by Google in my ad-profile that is then used elsewhere on their properties...maybe I'm naive, but I assume they do not let email keywords cross pollinate into Adsense on the wider Internet... Of course, I don't trust either one of them. The notion of storing my mail spool on anyone else's servers is unfathomably derelict to me. I recognize that I'm in the minority here.