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Using Linux on multiple computers, until the last Thunderbird version I was able to keep all my email folders on an external hard drive, by simply puttin a symlink of the ~/.thunderbird directory to a directory on the external HD. This way I was able to work everywhere, always with my email locally available. Last T version, unfortunately, broke the spell, and I was greeted with the error "this installation of thunderbird has a new profile". Do you know if there is a way to keep on working with a detachable email storage?

Using Linux on multiple computers, until the last Thunderbird version I was able to keep all my email folders on an external hard drive, by simply puttin a symlink of the ~/.thunderbird directory to a directory on the external HD. This way I was able to work everywhere, always with my email locally available. Last T version, unfortunately, broke the spell, and I was greeted with the error "this installation of thunderbird has a new profile". Do you know if there is a way to keep on working with a detachable email storage?

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use the same Thunderbird version. Simple as that. The issue is the profile is locked into the highest version it has been used with.

> use the same Thunderbird version. Simple as that.

Thank you! ... but there really isnt any other way? Unfortunately my main desktop is using an old Fedora due to some stability problems with software I wrote, and currently I'm unable to update it. So I'm with ThunderbirdV60.2.1 there, and with ThunderbirdV78.7.0 in my Manjaro laptop

I was thinking that maybe the top level of the profile directory contains stuff locked to the specific version, but maybe the "Mail" subfolder should be version-independent ...

A profile that has been opened by a recent version of TB, can be opened in an older version, if you add these arguments to the command line when launching the old TB: -p --allow-downgrade That will will launch Profile Manager, to select the profile and run the newer profile with the older TB.

http://kb.mozillazine.org/Profile_manager#Linux

I thank you both with the suggestions, but at the end I think the best solution for me is to install Thunderbird wherever I can, not caring about version numbers, and to just symlink the local folders to my external HD email folder:

/home/username/.thunderbird/xxxxx.default/Mail/Local\ Folders -> /externalhd/Mail/Local\ Folders


I tested and it seems to work. I guess it should be fairly robust to future upgrades, since after all Thunderbird should follow the standard email format (mbox, I guess), right?