If a message uses a header more than once, Evolution pays attention only to the first instance, even if the message defines the header differently the second time. For example, if a message declares the Resent-From: header as engineering@example.com and then restates it as marketing@example.com, Evolution filters as though the second declaration did not occur. To filter on messages that use headers multiple times, use a regular expression.
Mezu batek goiburu bat behin baino gehiagotan erabiltzen badu, Evolution-ek lehenengoari bakarrik begiratuko dio, nahiz eta mezuak beste modu batean definitu goiburua bigarren aldian. Adibidez, mezu baten Nork-Birbidalia: goiburuan &ldquo;engineering@example.comrdquo; jartzen badu, eta gero &ldquo;marketing@example.com,rdquo; jartzen badu, bigarren deklarazio hori egongo ez balitz bezala iragaziko du Evolution-ek. Goiburuak behin baino gehiagotan erabiltzen dituzten mezuak iragazteko, erabili adierazpen erregularrak.