Except that inbox deliverability is not "oh your domain is verified? free pass". So many things nowadays play a part into whether you hit spam filters - the con

Except that inbox deliverability is not "oh your domain is verified? free pass". So many things nowadays play a part into whether you hit spam filters - the content of your post and how 'spammy' it looks, whether or not you have an unsubscribe button (if not, your message better look extremely transactional), the history of click-through rates on your domain (if you send stuff for a week straight and nobody ever clicks on it, chances are you're sending unsolicited emails). DKIM/SPF is only to validate that the sender isn't masquerading as your domain, and is what enables your emails to have a fighting chance of creating and maintaining good reputation status with the spam filter algorithms/ML models. Past that, your emails need to be useful and solicited or you're just sending spam from a verified domain.