This forum is for Firefox, the web browser. Thunderbird forums are here: https://support.mozilla.org/en-US/questions/thunderbird To answer your question, you need to export your contacts from Live Mail to a supported format. Thunderbird supports Eudora, Outlook, Outlook Express, .tab, .csv, .txt, and the vCard format. Once you export your contacts, open the Thunderbird address book, go to Tools, and select Import. You will be able to select Address Book, select a format, and import your contacts.

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