Rated 2 out of 5 stars

good idea - but it dont works for me. it says on every mail "local message" ...

;
i use a arcor.de account (pop3.arcor.de)

This review is for a previous version of the add-on (0.5). 

are you using this on a gmail account? gmail to gmail will say that because there are no public IP addresses. I can only lookup public IP addresses that exist in the header of the email.