I've been getting emails like the last one in my university inbox (Gmail-powered) for months now. They always follow the same format: a Vietnamese-sounding name

I've been getting emails like the last one in my university inbox (Gmail-powered) for months now. They always follow the same format: a Vietnamese-sounding name (correct me if I'm wrong about that), followed by a 4-ish digit number. Most were going straight to my inbox instead of my spam folder. I cut a support ticket to the university IT team, asking if they had turned off spam filters or something. It just seemed very unlikely Gmail would not detect them as spam. I think it's gotten better recently, but I don't open that account a lot since I avoid Google like the plague. EDIT: to add to that, many of them had subjects that started with a green heart emoji. I was super disappointed that Gmail didn't let me create a filter based on that to at least delete them.