Email Replies on Blogger
So I did a little research, and I've learned that it is possible (and very easy) to email a response to a comment on Blogger!
I hope this helps some people out.
First, on your profile page you want to make sure that show my email address is checked. This will ensure that when you comment on someone's blog they will be able to see your email address on your profile and they will have a way to email you if they want to follow up with you.
It's also just nice to have a way for people to get in touch with you online.
Next, go into your Setting tab and click on Comments. You'll see lots of options for comment moderation, word verification and where you want your comment form to go.
Scroll toward the bottom and find Comment Notification Email.
Add the email address that you want to use for your blog correspondence. (It doesn't have to be the same email you use to log in to your blog.) Make sure you hit Save Settings.
Now when someone leaves a comment on your blog you will receive an email. And if they have checked Show my email address on their profile page, you'll be able to reply directly to them by replying to the comment notification email you receive.
I don't know why it took me so long to figure this out, and maybe I'm the last one to know, but I'm glad I know now. I can finally answer questions and follow up with commenters!