Reindexing: "determining which messages to index in sent"

User Help for Mozilla Thunderbird
Posts: 12
Joined: September 16th, 2009, 10:24 pm

Post Posted October 10th, 2017, 10:41 am

I do not need help, but thought this might be useful for others. I was using Thunderbird 45 on under Mac OS Sierra and intentionally deleted the .msf files (and a database file, sqlite or somesuch) in order to force re-indexing.

I then restarted Thunderbird but the Activity Monitor showed that it was stuck "determining which messages to index in sent" for > 24 hours. After some searches, I found this thread:, which suggested updating add-ons, etc. But the ultimate fix was simply to update to Thunderbird 52 (File/About) and my machine is now happily indexing my bazillion messages. I'm guessing it will all work out OK now.

Hope this helps someone.


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