One of our SharePoint 2010 sites has an issue that “E-Mail a link” not working for the documents. This feature is to allow users to conveniently send out a link to a document on SharePoint, by click the dropdown menu of the file.
Did some research and found out it was caused by the masterpage. We upgraded our SharePoint site from SharePoint 2007 to SharePoint 2010, but the look and feel is still SharePoint 2007. We have not performed the Visual Upgrade yet. In other words, we are still using the V3 masterpage. And this masterpage has been customized before.
Use SharePoint Designer to open the customized default.master. Add the following code into <HEAD></HEAD>
Save the file and go back to your site. Try the function again.