Sieve & ISPConfig 3.1: Mark messages as read

Sieve requires imap4flags for that purpose.

Custom config file template for Sieve

cp /usr/local/ispconfig/server/conf/sieve_filter_1.2.master  /usr/local/ispconfig/server/conf-custom

Add imap4flags

vi /usr/local/ispconfig/server/conf-custom/sieve_filter_1.2.master
require ["fileinto", "regex", "date", "relational", "vacation", "imap4flags"];

Add custom mailfilter reciepe to ISPConfig

setflag "\\seen";

See also