This is an example contact page to show how you could setup a simple crm using just free tools + your website.
Follow the walkthrough here (link) to setup a similar form so that on every submission:
- An email will get sent to you (the website owner)
- A new card will get setup on your Trello board (a free/simple management tool)
- An email confirmation will be sent to the person who enquired, with an optional 'thank you' message or canned response
And all of this done automatically.
Try it yourself... you will get a confirmation in you inbox and a new card will be added to the test trello board.