Avaliado com 4 de 5 estrelas

por Utilizador do Firefox 682d7c em Dez. 8, 2017 · ligação permanente

for thunderbird52 and linux, remove the old extension of contact sidebar and go to add-ons manager window.
Now drag-drop contactssidebar-1.7.1.zip file to this window and appears the option to install the new extension.