Migrating from a dovecot/Roundcube mail system I have been using Sieve filters a lot. Now I would like to recreate my filter rules in Kopano
I may be a bit old fashioned but I use a lot af maillist. My experience is that the most reliable way to sort these to folders, is to use some of the hidden headers inserted by the list software like Mailman. In most cases I would use something like
If Mailheader includes .. "List-Id: General KDE discussion"
But using the rule editor I find no way to create filters based on mail header fields other that To:, From: and Subject:. Did I oversee something or is there another way to create filters detecting on header fields?