How to set an umlaut ü in the mail subject
问题 I need to generate German e-mails which contain umlaut characters. In the e-mail itself this works perfectly, but not in the subject of the e-mail. I've tried many different umlaut letters and they all seem to work except for the ü. I also tried different mail libraries (HTMLMimeMail & PHPMailer) and they both fail at this: $mail = new htmlMimeMail(); $mail->setTextEncoding("base64"); $mail->setHTMLEncoding("base64"); $mail->setTextCharset("UTF-8"); $mail->setHTMLCharset("UTF-8"); $mail-