I'm currently building a website with Ruby on Rails deployed with Heroku. I have a form on a comments and suggestions page that accepts a user email and suggestions on the website. 

My question is how do I implement a way for the suggestions to be emailed to my website's email address after the user has submitted the suggestions? 

Do I have to purchase a third party email server? Do I have to store the comments onto my DataBase?

Sorry if this seems obvious, I just started web development and appreciate all the help I can get!