Google Apps are no longer free - http://www.google.com/enterprise/apps/business/pricing.html
We configured a number of websites to use Google Apps when they were free. Those sites are "grandfathered in" but unused sites have been cancelled.
Fortunately we have an low cost alternative. We will include one email address at your domain free with web hosting. Additional email addresses are $3 per month.
A webmail interface is standard and the system supports pop and imap. Email email@example.com for details.