sendemail a email sharing the url of a page/post

I need to be able to share the link of a post the a tester version of the posts can be found here http://dev.rgbdesignuk.com/memorial/test-test/

what I need is a option similar to the option for inviting some one to view the memorial on this page http://www.lovedforever.org/user/Jane-Smith

it just needs to be a simple email box that will send a email sharing the pages/post url with a standard formatted email