是否可以将颜色设置为电子邮件主题?我在下面试过这个没用的。
//subject = "<FONT COLOR=\"#ff0000\">" + subject + "</FONT>";
subject = "<FONT COLOR="#ff0000">Test Subject</FONT>";
String yourEncodedString = MimeUtility.encodeText(subject, "UTF-8", "B");
message.setHeader("Subject", yourEncodedString);
message.setSubject(yourEncodedString, "UTF-8");