Hi, Under, * Linux (Manjaro XFCE) * Thunderbird78.8 * Account: hotmail How can set on which folder, actually other partition and folder than OS system, the Thunderbird store the emails? From a fresh install, 1/ I started Thunderbird, 2/ set my hotmail account and Thunderbird started downloading the messages and creating reproducing my email tree structure. 3/ Without waiting the full download I closed TB 4/ I checked .thunderbird folder I see "profiles.ini" and "installs.ini" files as well as 2 folders <random_string>.default <random_string>.default-release 5/ In the profiles.ini I do see not see a relationship with my hotmail. 6/ under <random_string>.default-release/ImapMail/outlook.office365.com/ I see my hotmail account folder structure 7/ I cut & paste the <random_string>.default-release to the new partition (non OS) The initial '''profiles.ini''' is [Profile1] Name=default IsRelative=1 Path=7xaim9be.default Default=1 [Profile0] Name=default-release IsRelative=1 Path=eatrfwpe.default-release [General] StartWithLastProfile=1 Version=2 [InstallFDC34C9F024745EB] Default=eatrfwpe.default-release Locked=1 '''The modified one''' [Profile1] Name=default IsRelative=1 Path=7xaim9be.default Default=1 [Profile0] Name=default-release IsRelative=1 Path=run/media/phx/MMedia/eatrfwpe.default-release [General] StartWithLastProfile=0 Version=2 [InstallFDC34C9F024745EB] Default=run/media/phx/MMedia/eatrfwpe.default-release Locked=1 I also modified '''installs.in''' as such [FDC34C9F024745EB] Default=run/media/phx/MMedia/eatrfwpe.default-release Locked=1 I start TB, it request if I start with the "default-release" profile which I do, finally it prompts "'''Your Thunderbird profile cannot be loaded. It may be missing or inaccessible'''" Thanks I read https://support.mozilla.org/en-US/kb/profiles-where-thunderbird-stores-user-data