I've never emailed them but I have called them on a few occasions. Somehow they pick up before it even rings once. And it's a real person, not a phone tree. Pretty remarkable.
They are really fast to get back to you and will tell you what stuff is which can be helpful in certain situations where the material or vendor might matter.
It's a lot less common than you think, especially by email. In my spare time, I work on motorcycles, and I often have to source specific parts or - in rare cases - reach out to a local machine shop. I've given up on email, a phone call is often the only way to get a response.
When you work in the tech industry, you get accustomed to everything being done by text, but the rest of the world isn't so convinced :)
Don't worry, just click the email link at the top of the page and they WILL get back to you - even over a 20 cent part.