Comment by throitallaway

The first "email" was sent in the 1971 and SMTP was designed in 1983. Back then the implementers didn't dream of the adoption levels of these protocols that we see today. Your same complaint could be levied against the best practices for phone calls in order to avoid scams, and that's also a slightly older technology.

Some of these technologies that have been mass adopted because they're easily accessible also have glaring security holes and ways to be exploited built into them. It's a tale as old as time, and I can hardly blame businesses in this specific case (using no-reply addresses.)