>> How would it know the difference if it was Thunderbird, or the user? > > You can guess by timing. > > If the message is moved to spam folder immediately after being fetched by > client, then it is an automated filter action. If there is at least a few > seconds delay, then it is probably the user manually moving the message into > spam folder (the user needs some time to look at least at the subject of > the message and click the appropriate button).
The mail client with its local spam filter may not be connected at the time the message arrives in the inbox. It may come online at a later point and move messages to the spam folder with considerable delay. — Matthias _______________________________________________ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop
