Anyone an email expert? Need Help. I've been put on a spam list.

So we have about 500K emails and we send out emails twice a week. Randomly last I saw my open rate plummet. I started digging and now we are on a spam list for at least gmail accounts... probably more.Things I have done so far: -authenticated DKIM -SPFGoing to do: -Send out plain text emails for now -Get DMARC all set upAny other suggestions? I would love hear about anyone with a similar experience. Desperately need help. via /r/business http://ift.tt/2x0hrZu