I’m running Spamsieve 2.9.49 on macOS Monterey 12.4 on a Mac Studio and using Mail Version 16.0 (3696.100.31) as my client.
I have three SpamSieve rules, two for IMAP accounts and one for a POP3 account. The problem I’m having is that about once a week the SpamSieve rule for the POP3 account loses the name of the POP3 email account (the dropdown box in the rule becomes blank) and sometimes the rule becomes inactive (unchecked). When this happens, of course, SpamSieve does not process any of the emails that are coming in through that POP3 account. I haven’t had any problems with the two SpamSieve IMAP rules.
I have another rule, not related to SpamSieve, at the end of the list of all my rules that moves any remaining POP3 emails to a specified folder in one of my IMAP accounts; that rule often loses its POP3 account name when the Spamsieve rule looses its POP3 account name.
I’m not sure if this problem is related to Spamsieve or if it’s a bug in Mail related to POP3 accounts.
Any advise on how to troubleshoot this or keep it from happening again?