Rated 4 out of 5 stars

Very usefull add-on. Should be part of Thunderbird. What I miss is a trash to restore accidentally deleted addresses. And I miss a back-up function. Could also be export to .vcf of all address books at once. These functions would make it realy professional.

This review is for a previous version of the add-on (33.4).  This user has other reviews of this add-on.

in next version, it would possible to undo/redo contacts modifications ;O)