Iirc you can provide the encoding for the subject inside the subject (and encode the original subject string in a proper way):

See http://en.wikipedia.org/wiki/MIME#Encoded-Word

Subject: =?utf-8?Q?=C2=A1Hola,_se=C3=B1or!?=

is interpreted as "Subject: ¡Hola, señor!".

update: wiki url changed to link

In reply to Re: Encoding Mail Subject by linuxer
in thread Encoding Mail Subject by mrguy123

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