Weird email sign ups and emails

Is anyone else getting weird email sign ups? The names are a bunch of random letters. The emails look legit. From many email providers.

And then, I’m getting emails from the same thing. The subject line is a bunch of randome letters. The body of the email is a bunch of random letters. And their email address. That’s it.

Anyone know what is going on with these? Bots I assume but to what end?

Thanks,

B.D. Lawrence.