A keyboard shortcut for Send › HTML to Clipboard.
Could it be possible to ascribe a keyboard shortcut for “Send › HTML to Clipboard” action? It could be fantastic if it could work even if the side panel with text preview would be closed.
It is already possible and does not depend on the plugin.
Just go to the menu Settings --> Keyboard and than switch to "Plugin commands".
After that, you can define a keyboard shortcut yourself.

I’ve found this option but it seems it’s not related to the Markdown plugin :( I only have those options related to the plugin within Notepad++:

@Zack-83
While the option You’ve pointed out does nothing when initiated within a Markdown document (no html lands in the clipboard in my case).
You are right, it is another plugin and it does not work :(