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TancaComentari del Duplicate Contact Manager per Ricardo Simões
Rated 5 out of 5 stars
Last update is from 2012 but still works on Thunderbird 45.4.0 (though only by selecting one address book at the time). I would like to translate this add-on to Portuguese European pt-PT, developers please submit your add-on on babelzilla.org for free localization
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