Rated 4 out of 5 stars
I believe it should come with some option to assign priorities... I mean: if it finds I already used 2 or more identities, then I should be able to decide which one takes priority and gets used.
This in my opinion should be always true, including the "detection" tab: for example I may want to always use my account B when my last name appears, regardless of any other settings.
Finally, it should support for alerts: for example any time the word "regards" is detected, I should be asked which identity to use (defaulting my professional one, for example)
...just ideas, but the extension works fine other than that :)