If I copy a message file of Local Folders from the Thunderbird profile on one computer to the corresponding path on another computer, will Thunderbird process it correctly? I see my e-mails in Local Folders are stored in this file, /home/norio/.thunderbird/<random>.default-release/Mail/Local\ Folders/<subfolder_name>.sbd/Inbox If I copy this file to the same path (except rewriting <random> string) on another computer by OS's commands (like cp and rsync), will the messages show up in Thunderbird on the destination computer? I see many back-up and recovery articles that instructs the users to copy the entire profile directory and copy it to the new computer. I wonder if I can copy only a message file, so that I don't have to overwrite the entire settings and messages on the destination computer.