Earlier quoted context omitted.
That's complete nonsense. Once people grow older (the one's who have the money for your product), email is the standard. No one sits on text messaging all day to communicate any real business.
I don't know most of my friends' email addresses, and those I do know, I wouldn't be sure that they are actually checking them. I'm 32.
> my friends' email addresses
You two are talking about different things.