Checking for new messages in other folders - Thunderbird - MozillaZine Knowledge Base

POP You can only check for new messages in the Inbox folder on a POP server. However, some webmail add-ons can be configured to check for new mail in other folders. Any of those messages are downloaded to the inbox and a special header added so that a message filter can test what folder they came from. IMAP Thunderbird only checks the Inbox for new mail in IMAP accounts by default. But you can con

[Cai0407]

高速リリースのあたりからどうもおかしいと思っていたが、mail.check_all_imap_folders_for_new true から mail.server.default.check_all_folders_for_new に変わっていたのか