You’ll need to add the mailto: hyperlink manually.
How are you creating the hyperlinks for the email address? I copied your sample address text above, plasted into ID, highlighted the text, right-clicked and chose Interactive and the appropriate choice from the flyout menu, chose Mailto, and pasted the address in the box.
Make sure to select the Hyperlinks check box in the Export dialog.
The screen shot shows the link in the PDF and Live Mail in fornt of it after clicking the hyperlink.
Take care, Mike
You need to create a hyperlink for it.
All you’re seeing now is Acrobat automatically creating the link…and doing it incorrectly.
FWIW, you should be doing this for any link that is important. Users can turn off that preference and all the links will be dead.