There are many third-party form mail options available through popular builders and applications, but you can always use cPanel's built-in form mailer anytime if preferred.
In order to gather information as you need, we recommend looking into the cPanel. Once logged into your cPanel, scroll down and look for the programming section, then click the Script Center icon to find the Mail link. This provides an example form and is very similar to what you'll need in place to collect information from your visitors. With some simple editing, your form will be emailing you the info you need/want.
Pooling the collected information into a mailing list is another task you'll have to tackle. Unfortunately, we have no automated facilities in place for something like that.
For mailing lists, we recommend any of the mailing lists (DadaMail, poMMo, phpList, etc.) that are found in the One-Click Installs icon under the MOJO Marketplace section. Any one of these can easily be auto-installed.
To change the subject of the email sent from Bluehost.com, add the following line to your form:
<input type="hidden" name="subject" value="The subject you want">
Each field can contain up to 102500 characters.
If you specify any email address other than one hosted with Bluehost, the email will not be sent. Instead, you need to set the 'sendtoemail' to an email address account set up in your Bluehost cPanel.