Thunderbird and SeaMonkey in the SAME computer Bewertet mit 4 von 5 Sternen

It's not a review, but a consult: I wish to have the same addresses books for Thunderbird and Seamonkey (I use both of them IN THE SAME COMPUTER) and daily updated for both applications.
It's feasibility isn't clear to me and how to do it. Thanks in advance.

Diese Bewertung wurde für eine vorherige Version des Add-ons (1.0.10) abgegeben. 

Do a local sync to the same local folder