In Kerio Connect, the filtering of personal mails is based on the filter language Sieve. As I didn't find many good samples in the Web, find below some interesting ones. I will update when I have new ones: if allof ( header :contains "Subject" ["rma *","* rma","* rma *","rma"], address :all :contains "Cc" "joe@joe.com") { fileinto "RMA"; keep; } This copies any mails to the folder RMA that match the following criteria: The subject of the mail contains the word RMA and the mail has joe@joe.com Read more [...]