In the last week or so, I've noticed my backups have about tripled in size. Looking into it, the culprit is a 106MB file in the Thunderbird directory called global-messages-db.sqlite. The Mail directory totals about 118MB, so I'm guessing that the entire Mail repository is being mirrored in a database, probably triggered by my recent use of "Search Messages".

There doesn't seem to be a config option to control this "feature", so I'm guessing it's a build option that just got turned on, if it's an option at all.

If this can be turned off, we may want to consider it. One of the purposes of the Unix mail file scheme is to isolate frequently-changed folders from seldom-changed folders, so that incremental backups don't pick up the entire mailstore every day (as with systems like Outlook). If Thunderbird is going to replicate the entire mailstore in a database and maintain the database in parallel with the mail folders, this goal goes to hell in a handbasket.

Opinions ?

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