Lets add a "Contact us" page with an online mail form to your Joomla website using the Joomla form component.
Step 1. First you need to create a new Contacts Category. For this purpose go to Components -> Contacts -> Categories:
Step 2. Click on [New]. Since we plan to have a simple Contact Us page, you should create only one single category. We will use "General" for its name in the tutorial. Enter "General" under title then click on [Save].
Step 3. Go to Components -> Contacts -> Contacts:
Step 4. Click on [New] and fill in the information. You have to make sure the email you enter is valid since all the mails you receive via this Joomla contact form will be sent to it.
Step 5. In order to avoid having your contact's name duplicated later, from the right box "Contacts parameters" check the button Hide next to "Name".
Step 6. Leave the rest of the default options unchanged and click on [Save] from the top-right menu.
Your Joomla contact form will be saved and you will be able to publish it on your site.