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CloseReview for Zindus by R
Rated 3 out of 5 stars
There is a bug: The extension seems not to see contacts that have been added to a mailing list in the adress book window. It then removes them from Google Contacts. I had to delete the mailing lists, to get working sync again
The addon doesn't support thunderbird mailing lists.
It supports google groups instead.
See:
http://zindus.com/i/mailing-lists
http://zindus.com/i/contact-wont-sync
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