Time to start marking them as spam and hurting their sender reputation.

When they were naming vitamins they must have thought there were going to be way more vitamins than there ended up being. OK let’s name these: Vitamin A, Vitamin B… Ok, man, slow down, we’ve got a lot to cover here. B2, B3, B4, B5, B6, B12. Then they got to E and they were like 'We’re pretty much done. We’ve got all those damn B’s. This is embarrassing. Let’s just skip to K and get the hell out of here.