When junk controls prefs are enabled and set to move junk into a separate folder, this folder is not created if it does not exist. This leads to some unexpected weirdness - e.g. junk mail ending up in Trash. If the folder is manually created, everything works fine. STR: 1. Create a new mail account -> two default folders are created: "Inbox" and "Trash" 2. Set Junk Settings according to attached screenshot 3. See no "Junk" folder being created Expected: Check if the destination folder exists, and create it if necessary.

Bug 505949 is report for same problem on "Local Folders"(Global Inbox owner), and it sounds "Local Folders" only issue. But it seems that problem occurs on any new POP3 account.

Setting dependency to Bug 505949 for ease of track.

(In reply to comment #0) > e.g. junk mail ending up in Trash. As I wrote in Bug 505949 Comment #11, I couldn't see phenomenon of "move to Trash" by "manual Mark As Junk" for ordinal POP3 account(dummy POP3 server, not "Local Mail Folders", not Global Inbox owner.) When does the "junk mail ending up in Trash" occur? Manual Mark As Junk? Junk filtering upon mail download?

The patch that I am working on for bug 505949 seems to solve this bug, so setting as a dup.