E-Mail

How come I can`t send a document out of documents when I click on Mail? I get a Message that says ( There is no e-mail program to preform the requested action, Install an e-mail program or if one is all ready installed create an association in the default program control panel) I went into the control panel and I clicked on mail and made it my default and nothing changed. I have an Hotmail account and a Gmail account. How do I fix this?