Credit Karma is the biggest offender off the top of my head. For a company in the consumer datamining business, they sure aren't doing a good job.
All support[at]<company>.zendesk.com were flagged, none of them reached the Inbox.
Most of whatever[at]company.tld were flagged also. I think only Headspace and another that I don't remember got to my inbox. There were some automatic SPAM flags using custom domains that are more or less known: Tinder, Squarespace, TED, ...
So I guess currently their reputation is messed up.