(In reply to Michael Bauer from comment #16) > How exactly does one set `pref("mailnews.default_view_flags", 0);`? Due to popular demand (and as the pref is pretty hard to find and use), I've created a new section titled [Changing default threading mode](https://support.mozilla.org/en-US/kb/message-threading-thunderbird#w_changing-default-threading-mode) in the [Message threading in Thunderbird](https://support.mozilla.org/en-US/kb/message-threading-thunderbird) article. Note that changing the hidden pref **`mailnews.default_view_flags`** to 0 (unthreaded) will only apply for _new_ folders created after the change. For existing folders, there are other methods documented in the article. > Plus how is a non-dev user supposed to figure that out I wonder? As of today, they can find information in the support article, but I'm still in favor of exposing this pref in the settings UI.
Bug 1764842 Comment 17 Edit History
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(In reply to Michael Bauer from comment #16) > How exactly does one set `pref("mailnews.default_view_flags", 0);`? ## How to make new folders in Thunderbird default to unthreaded ## Due to popular demand (and as the pref is pretty hard to find and use), I've created a new section titled [Changing default threading mode](https://support.mozilla.org/en-US/kb/message-threading-thunderbird#w_changing-default-threading-mode) in the [Message threading in Thunderbird](https://support.mozilla.org/en-US/kb/message-threading-thunderbird) article. Note that changing the hidden pref **`mailnews.default_view_flags`** to 0 (unthreaded) will only apply for _new_ folders created after the change. For existing folders, there are other methods documented in the article. > Plus how is a non-dev user supposed to figure that out I wonder? As of today, they can find information in the support article, but I'm still in favor of exposing this pref in the settings UI.
(In reply to Michael Bauer from comment #16) > How exactly does one set `pref("mailnews.default_view_flags", 0);`? ## How to make new folders in Thunderbird default to unthreaded ## Due to popular demand (and as the pref is pretty hard to find and use), I've created a new section titled [Changing default threading mode](https://support.mozilla.org/en-US/kb/message-threading-thunderbird#w_changing-default-threading-mode) with detailed steps in the [Message threading in Thunderbird](https://support.mozilla.org/en-US/kb/message-threading-thunderbird) article. Note that changing the hidden pref **`mailnews.default_view_flags`** to 0 (unthreaded) will only apply for _new_ folders created after the change. For existing folders, there are other methods documented in the article. > Plus how is a non-dev user supposed to figure that out I wonder? As of today, they can find information in the support article, but I'm still in favor of exposing this pref in the settings UI.