Way too much spam. All unwelcome and uninvited. Too much of it is nasty, or fat shaming, or flat out lies, has no unsubscribe option, or the unsubscribe option does not work.
All of them have email addresses that are undeliverable.
It looks to me like it's intentional, letting the spam through. Maybe you get kickbacks.

We have to jump through hoops to even sign in. And you deliver copious spam with no good return address.

How many users are getting copious messages about their cloud account?
I get dozens. I have no cloud account.

Do a better job of filtering out messages with no good return address.
Refuse to deliver them if there is no unsubscribe options.

AI can easily handle this.
So, what is the hold up?

There is an unbelievable amount of Spam coming through with worrying email addresses - worrying on the one hand because they contain familiar names (but are not genuine), and on the other hand because there are quite a few with obvious pornographic content. Even if I block all the addresses, new ones with the same user name but different domain name come through.

Also, the Spam folder does not even show a number next to it, so unless I check the folder, I don't know that new emails have landed there.

Spam