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CloseReview for EMail Address Crawler by SoNotHollywood
Rated 5 out of 5 stars
I used Eudora for years and never had a address book, don't ask why, last night I switch to thunderbird and i was so happy to find this add-on, so simple, searched over 10,000 emails and filled up my address book with over 3000 emails thank you! :-)
This review is for a previous version of the add-on (1.6.4).To create your own collections, you must have a Mozilla Add-ons account.