Rated 4 out of 5 stars

All popup dialogs repeat their message following straight on from the end of the 1st.
I also had some trouble with the display of mailing list members in the address book which "seems" to have gone away once this extension was disabled. Not sure why that would be.
I am on Windows 7 pro with Thunderbird 45.1.1

This review is for a previous version of the add-on (0.8.10).