Trigger not launching email in LMS player

Classic Review-vs-LMS split, and it's almost never the trigger itself. In Review 360 the course runs as a top-level page; in the LMS it usually sits inside an iframe, and LMS iframes are frequently sandboxed. A mailto: fired from inside a sandboxed frame gets silently swallowed — often with nothing in the browser console to show for it.

Two quick tests: publish the same file to a plain web server (not the LMS) — if the hotspot works there, the course is fine and the LMS frame is the culprit. Then ask your LMS admin whether content iframes carry sandbox attributes, and whether launching in a new window is an option. If the frame is non-negotiable, the reliable workaround is swapping the mailto for a simple contact-form page opened with a URL trigger.