The examples, casual or not, are automated but are missing "unsubscribe" links. Perhaps they are just cropped out from the screenshots, but if they're indeed missing, that's a "Report Spam" for me.
I lean this way as well. I usually signed up for these emails in the first place so I am more than willing to unsubscribe when I'm done. But the minute you don't include an unsubscribe link, or have anything beyond one-click unsubscribe, I'm marking every recent email of yours spam.
Follow the rules and I will go out of my way not to hurt your metrics or your business, but don't and I'll go out of my way for the opposite.
It doesn't matter if they are automated or not. If I didn't opt into marketing emails when I signed up they are illegal in many places. (Canada, California that I know of for sure)
