Hi. If I send an email (out of KMail) with the subject "Müller Schulze Schmidt" it is saved as
=?iso-8859-1?q?M=FCller_Schulze?= Schmidt in "~/Mail/sent-mail/cur/". The received mail doesn't contain a white space between "Schulze" and "Schmidt" any more ("Müller SchulzeSchmidt"): =?iso-8859-1?Q?M=FCller=20SchulzeSchmidt?= Sending it with Mozilla Thunderbird 1.0.2 the subject line is saved correctly as: =?ISO-8859-15?Q?M=FCller_Schulze_Schmidt?= I haven't read the appropriate rfc but I think the whole subject line should be encoded (iso-8859-1). My system: Debian 3.1 KMail 1.7.2 KDE 3.3.2 Send emails: SMTP, port 25 Receive emails: POP3, port 110 Martin