Google now requires any website mail-to form collecting geographic information about their clients to be displayed with an SSL. Really Simple SSL is the easiest, fastest plugin to help with this endeavor.
All you have to do is call your webhost and purchase an SSL. After the SSL is activate and propogates you login into your WordPress control panel and install Really Simple SSL to your plugin library. After you install Really Simple SSL it will ask you if you want to enable SSL, click Enable and you’re done! Simple!