Location of LocalDB File – Backup Cardbook for Thunderbird › Forums › Main Forum › Location of LocalDB File – Backup This topic contains 1 reply, has 2 voices, and was last updated by kcooper 2 months, 1 week ago. Author Posts 2nd May 2018 at 02:48 #1931 omoknenParticipant I just started using this add-on (LocalDB onlyh), and I want to make sure I backup the files, but to be honest I don’t know where the files are kept. I looked in the Thunderbird Profile folder and I found a cardbook directory but it has very little in it. I do use a non-standard directory for my profile. Thank you. 9th June 2018 at 13:45 #2009 kcooperParticipant I’d like to know this too please. I’m just starting to set up syncing addresses with my google account and would like to regularly back up the offline cache of my contacts in Thunderbird. Please provide file location details. Author Posts You must be logged in to reply to this topic.