- Plesk Onyx for Linux
There are emails already filtered and tagged with "SPAM" in the subject by a spamfilter. How to configure moving such messages to Spam folder automatically?
It can be done via sieve rules in a webmail interface and via third-party extensions in mail user agents (MUAs) like Thunderbird
For example, to create a filter rule in Roundcube:
Log in to a mailbox using Roundcube
Go to Settings > Filters > New Filter > :
Configure the filter as follows and click Save: