When I put up a web page that advertises my company, what it says is that I am happy to receive email inquiries regarding the products or services advertised. It is important to keep in mind that now, entirely without significant cost to themselves, hundreds of thousands of businesses could simultaneously bury each of us in email ads. That is why people are so passionate about not receiving unsolicited email ads. If I get something in the mail, then the sender has paid postage, along with printing and paper costs. These costs act as controls, prohibiting the whole world from swamping me at once.
Email is very different.
As it is, I get close to 600 emails a week, many of which are important and relate to my business. I have to read each and every one to see if it is important. Billing for my time is how I earn my living, and when I have to spend time to read through junk, it costs money right out of my company's pocket. This is why people are so vehement about not receiving unsolicited email advertisements, and why so many people sending out such emails have had their businesses shut down by retaliatory measures taken those offended. Let's be blunt about something else.