I've been getting enough of them to start seeing that most of the emails from amazon are generated in some form. A generated recruiting email is pretty much an immediate turn off for me.
Also, they have been very aggressive... going as far as the same recruiter reaching out on a monthly basis despite me telling them I am not interested.
These contractors (usually overseas) are paid mostly on commission and there are thousands of them. Its not how most big tech companies handle recruiting. They hand a gigantic list of emails to the mob and implement the "casting a wide net" strategy.
I’ve gotten emails from Google about Engineering Manager positions for software developers even though my LinkedIn profile shows no management experience (I have none) and it has that I’m not even currently officially a software developer (cloud app dev consulting).
The same with Facebook.