I’ve noticed the same, I wonder if they filter out emails that contain the company name when selling lists?

I do often get asked if I work for said company when giving it in person or over the phone, and I just say it’s so I know if it gets sold or leaked I know where it came from.

I seem to remember a few years ago I couldn’t sign up to a service with the company name in the email, but that’s the only time I came across that.