类 org.apache.commons.mail.Email 及其子类
包括 MultiPartEmail, SimpleEmail, HtmlEmail, ImageHtmlEmail
// Email email = Email的实例; email.addHeader("X-Priority", "1");
也可以把文字带上
// Email email = Email的实例; email.addHeader("X-Priority", "1 (Highest)");
优先级数值:
1( highest ) or 2( high ) 3( normal ) 4( low ) and 5( lowest )
默认为 "3"
下面是该方法的文档说明:
public void addHeader(String name, String value) Adds a header ( name, value ) to the headers Map. Example: X-Mailer: Sendmail, X-Priority: 1( highest ) or 2( high ) 3( normal ) 4( low ) and 5( lowest ) Disposition-Notification-To: [email protected]
网上关于邮件优先级的资料:
http://www.chilkatsoft.com/p/p_471.asp
You can add the X-Priority header field and give it the value string "1″. For example: email.AddHeaderField "X-Priority","1″ This is the most common way of setting the priority of an email. "3″ is normal, and "5″ is the lowest. "2″ and "4″ are in-betweens, and frankly I’ve never seen anything but "1″ or "3″ used. Microsoft Outlook adds these header fields when setting a message to High priority:
X-Priority: 1 (Highest)
X-MSMail-Priority: High
Importance: High
I don’t think you’ll need all three, but you can add them all if you wish. My recommendation is to only add the X-Priority header.