On Thu, 12 Mar 2015 23:22:57 +0100, Silvio Siefke wrote: >is there a way that i can delete automatic emails which has no thread? >For example ANN, Bug Emails or mails which become no answer. The [Bug n] mails have a Message-ID header too. Assume a Message-ID header really should be missing, then you could add a filter rule to automatically delete those mails.