i just solve it because i use other contact forum as well but it was the same so what you have to do is "WP Mail SMTP"
http://wordpress.org/extend/plugins/wp-mail-smtp/
Installed, configured with SSL, authentication, using a Google apps email account
like shown in this
http://www.experiencefarm.com/wp-content/uploads/2013/02/WP-SMTP-config.jpg
but if this do not work change the top option to use the php mail option