Filters don't always run
I have a bunch of filters ( quite a lot but not, I think excessive judging by comments I've seen here -not in the hundreds). The filters are created by using the Quickfilters add on. And by and large they work really well. I'm using POP3 in a Windows 10 machine. I keep TB up to date and it's 64bit version. However, sometimes the filters just don't run. I think it's when I've recently logged in to the computer/user. But a bunch of messages that should have been sorted into folders will routinely be sitting in the global inbox when I launch TB. And they won't move even when I manually tell TB to filter them. It doesn't matter if I tell TB to run the filters on the folder or individual messages. Messages that tehn arrive after that will play nicely and slide into their folders. The log shown nothing of these messages. It is as if the filters hadn't woken up yet when the emails came through. Except than that filters still won't then work on the messages when run manually. As if the TB rules engine won't recognise they exist. Any ideas what I should do?
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re :But a bunch of messages that should have been sorted into folders will routinely be sitting in the global inbox when I launch TB.
You mention POP and Global Inbox..... How many Pop accounts have you added in Thunderbird? Are they all configured as deferred accounts that use the 'Local Folders' Inbox to receive emails?
Do you have Thunderbird running in the background, like a sleep mode or perhaps set up in the Startup menu so it launches automatically when you start computer and logon to desktop ?
Start Thunderbird in Safe Mode to see if all filters start to operate as expected. https://support.mozilla.org/en-US/kb/troubleshoot-mode-thunderbird
Maybe Anti-Virus is scanning mail and causing a delay. Suggest you stop AV scanning incoming mail and run like that over several days to test.
There are just two accounts. Both sending emails into the "Local folders" account and its sub-folders. TB is launched as and when required. Lots of emails do arrive in their correct sub-folder as the rule directs- and are logged by TB The anomalous ones seem to arrive straight after TB launches (though it's hard to be sure) as if the rules haven't woken up yet. These don't get a rule applied and don't show in the rules log. The only AV scan I use is Microsoft's these days. So my first step should maybe be to have TB run at start-up. I'll try that, though it's usually manually launched immediately after log-in. I've also disabled the "let AV software quarantine emails" permission. I'm wondering, from what you've said, if that could be the culprit. Thanks, I'll get back with the outcomes
Modified by TerryB