Rated 4 out of 5 stars
I really like this add-on, since it makes it easy to spot references to me or specific items in e-mails at a glance.
But - I keep getting this "empty_messagePane" dialog, which I can't get rid of, on MacOS 10.6.
I close the dialog, but a blank grey box remains which then overlays all applications.
I looked at the code, and it would seem that you have alert() calls scattered in the code - really I think these should be limited to development code only, and should be commented out for publicly available code.
Could you please update with them commented out?