We were able to get the Mail Bookmark as Link functionality to work, while disabling the ability for users to create Server Objects with the following settings;
In the .QVW:
Enable Allow Server Objects checkbox in the Document Properties->Server tab
Disable the Add Sheet Objects checkbox in the Sheet Properties->Security tab
In the QEMC:
Enable the Allow server objects and Allow anonymous server bookmarks checkboxes
In tasks, under the Server->Server Objects tab, enable the All button on the Permission to Create Server Objects section.