Hi, I have Thunderbird Release 91.5.0 (64-bit) on a 2014 mac mini running High Sierra. The program and emails in three profiles are on my internal hard drive. I need to move it all to my external mac hard drive to free up space. I am using the same computer. The instructions via the link below are a bit confusing as I am not using a new computer. I would like the app to stay on my internal hard drive, but have the profiles and emails on the external hard drive so that I can continue to use them. https://support.mozilla.org/en-US/kb/moving-thunderbird-data-to-a-new-computer I copied the Thunderbird folder from the internal to the external drive. I then deleted the internal Thunderbird folder. I then updated the profiles.ini and then restarted TB, but it does not show me the emails. It created another TB folder on the internal drive. Here is the original profiles.ini. [Profile0] Name=default IsRelative=1 Path=Profiles/2v60fli0.default Default=1 [General] StartWithLastProfile=1 Version=2 [Install712DAF5A23ABECDC] Default=Profiles/2v60fli1.default Here is the updated profiles.ini [Profile0] Name=default IsRelative=1 Path=/Volumes/ExternalMacHD/Thunderbird/Profiles/2v60fli1.default Default=1 [General] StartWithLastProfile=1 Version=2 [Install712DAF5A23ABECDC] Default=Profiles/2v60fli0.default I am usually fairly good at doing this kind of thing, but my elevator is not making it to the top floor on this one. Any assistance is greatly appreciated. David