Good add-on but I need something Rated 4 out of 5 stars

The add-on is ok, but I would like to suggest an option to NOT add the address to the phonebook if it was NOT found.
I usually receive and send mails for some people I don't want to add his/her address and this feature it's almost here. I think, but maybe I'm wrong, it's easy to implement it.

This review is for a previous version of the add-on (0.8.30).