A Canonical Redirect

Well,
1. In the navigation, change /index.php to /
2. 301 redirect? I'm not sure I'd worry about it.

Dear emailrevealer,

Redirecting the non-www version of your domain to www one, can be done by creating a .htaccess file in the root directory of the site.
You can do it also, no webmaster knowledge is needed. Here is the content:

RewriteEngine On
RewriteCond %{HTTP_HOST} ^emailrevealer\.com$
RewriteRule (.*) http://www.emailrevealer.com/$1 [R=301,L]

If you will copy and paste those 3 lines into a new text file, saving it as .htaccess and upload it on your web server via ftp, should work.

If not, it may be related to the "RewriteEngine" condition.
If so, you have a second option, by adding inside your index.php the following lines of code:

if( $_SERVER['HTTP_HOST'] == 'emailrevealer.com' ) {
header("HTTP/1.1 301 Moved Permanently");
header("Location: http://www.emailrevealer.com" . $_SERVER['REQUEST_URI']);

}

If your webmaster can't embed none of these, assuming that you have also provided the link towards the "excellent resource on the topic", fire him! He is whatever else except a webmaster.

If none of the above helps, I can do it for you remotely, assuming that you have a Windows OS based computer to which I can connect remotely (with you in front of it, to see what I do - and also to assist me with the ftp password - I mean for you to type it it).

Success!