It might be useful to ask Apache Infra whether they have any information on these (e.g. what do their own spam metrics say, do they get any feedback from Google, etc). Unfortunately mailing lists seem to be less and less well supported by most email providers.
Matei > On Nov 2, 2016, at 6:48 AM, Pete Robbins <robbin...@gmail.com> wrote: > > I have gmail filters to add labels and skip inbox for anything sent to > dev@spark user@spark etc but still get the occasional message marked as spam > > > On Wed, 2 Nov 2016 at 08:18 Sean Owen <so...@cloudera.com > <mailto:so...@cloudera.com>> wrote: > I couldn't figure out why I was missing a lot of dev@ announcements, and have > just realized hundreds of messages to dev@ over the past month or so have > been marked as spam for me by Gmail. I have no idea why but it's usually > messages from Michael and Reynold, but not all of them. I'll see replies to > the messages but not the original. Who knows. I can make a filter. I just > wanted to give a heads up in case anyone else has been silently missing a lot > of messages.