Density is defined as how thick or thin you want your hair to be. The standard and most popular choice is 130% which is Medium Density. You can see examples of the density - Click Here.
Google's Gmail Web-based email service runs on the Internet Message Access Protocol system, but it also offers Post Office Protocol mail server access.
Port: 465 or 587. In case you use Google Apps with your domain name and you have created email accounts inside, you should use email account with the Username: field, i.e. user@yourdomain.com. The same email settings can be used with the email functionality of website application such as Joomla, PrestaShop etc.