Two ways that are easy in publisher:
1. create a link like: Email your comments here: ( Make it an email hyperlink with your email address )
2. create a form on a page using the form control function create a text box for comments
I prefer the second choice since your email address does not show up on the web page thus less spam form the web crawlers
Check with your hosting service about setting up form mail. I can't speak for all hosts, but the one I use (godaddy), my email address is embedded in the host files and not visible to the website visitor.
Spike