Comment 10 for bug 1849542

Agreed, deleting global-messages-db.sqlite is not really a solution, merely a workaround that people have come up with. We should get to the bottom of the issue.

So it appears that thunderbird 68.x is not liking something that it finds in the database that was considered valid in earlier versions. This would be a functional regression in upstream thunderbird.

@Gabriele, would you mind filing a bug at https://bugzilla.mozilla.org/enter_bug.cgi#h=dupes%7CThunderbird and sharing the link to it here?

I'm raising the importance of the bug, seeing that several users are affected.