There was a post on here like a week ago with everyone in the comments going back and forth about this, with a couple people shoving it down everyone's throat that "the seller could need it for bills, so they're allowed to pretty much pester a buyer" kind of attitude/mentality. It was annoying that the one person in particular was cherry-picking rules she would bring up and even called me names for pointing out that seller's actually aren't allowed to contact the buyer on delivery. I linked the mercari rules stating this for her and everything, but because she felt the need to be so confidently incorrect + call me and others names, I reached out to mercari about it. They got back to me and said that yes, it is in the rules that you cannot contact a buyer when the item has been delivered or ask for a rating.