Real Cause of the Missing Folder Pane in Thunderbird for Linux and Its Working Fix and Solution

Liam Proven lproven at
Tue Nov 15 19:53:09 UTC 2016

On 15 November 2016 at 10:07, Turritopsis Dohrnii Teo
<turritopsis.dohrnii.teo at> wrote:
> The real cause of the missing folder pane/folder pane not showing up in
> Thunderbird email clients for Linux operating systems is extensive and
> widespread corruption of the *.msf mail summary files or mail index files.
> If your *.msf mail summary files or mail index files are badly corrupted,
> the traditional usual recommended and oft-quoted solution of deleting the
> folderTree.json and session.json files in your mail profile(s) and later
> rebuilding them will not work, for sure. Even if you try this solution for 1
> trillion times, it will still not work. This is because the files which are
> actually corrupted are NOT the folderTree.json and session.json files. The
> real files which are corrupted are your .msf mail summary files!!!

You've not asked here. All I remember you asking here are paranoid
ramblings about the Singapore government having infected your machine
with spyware.

I have never seen or heard of this business of deleting JSON files.

However, the fix of deleting the index files -- the .msf files -- has
been known since the 1990s.

I switched from Thunderbird to Gmail in 2004/2005 but before then I
periodically had to delete the indices and make T'bird re-index my
folders. This is well-known and widely described.

Liam Proven • Profile:
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