How Gmail’s New Inbox Is Affecting Open Rates
For some reason, this paragraph irked me more than it should have:   If the subscriber has tabs but they didn’t opt
   to include the Promotions tab, Gmail will deliver
   to Primary instead. That’s good news. Other than
   that, we’re definitely testing the new inbox and
   trying to figure out how it works. My sense is that
   Gmail wants all marketing email to go to the
   Promotions tab. Even if we did find a tricky way
   into the Primary tab, they’re smart over there,
   and they’d more than likely address any reasonable
   workaround.

The Promotions tab is there so I don't have to see your emails. The fact that you straight-up claim to try to bypass that makes me put you on the same level as the V1agra spammers in my mind.I'll skim my Promotions tab when I want to. Stay out of my primary inbox.