jar 包： mail-1.4.jar

配置文件：list.properties、mail.properties

list.properties 内容如下：

list=aa@163.com,bb@163.com,cc@163.com 

mail.properties内容如下：

mail.protocol=smtp
mail.port=465
#mail.host=smtp.qq.com

#pe
mail.host=smtp.exmail.qq.com

#pe
mail.username=df_service@163.com
mail.from=df_service@13.com
mail.password=Pass@2016

mail.sslFactory=javax.net.ssl.SSLSocketFactory

案例：

public static void sendMailCash(String orgId, String orgName, String cashName, String totalAmount,
String prewaringValue) throws MessagingException {
Properties props = new Properties();

try {
props.load(JavaMail.class.getClassLoader()
.getResourceAsStream("mail.properties"));
} catch (Exception e) {
System.err.println("不能读取属性文件. "
+ "请确保properties在CLASSPATH指定的路径中");
}

Properties properties = new Properties();
properties.setProperty("mail.smtp.auth", props.getProperty("mail.auth"));
properties.setProperty("mail.transport.protocol", props.getProperty("mail.protocol"));
properties.setProperty("mail.smtp.socketFactory.class", props.getProperty("mail.sslFactory"));
properties.setProperty("mail.smtp.host", props.getProperty("mail.host"));
properties.setProperty("mail.smtp.port", props.getProperty("mail.port"));
Authenticator authenticator= new MyAuthenticator(props.getProperty("mail.username"),props.getProperty("mail.password"));
Session session = Session
.getInstance(properties, authenticator);
session.setDebug(false);
Message message = new MimeMessage(session);
message.setFrom(new InternetAddress(props.getProperty("mail.from")));

message.setSubject("ETS互联网支付-头寸预警通知");
message.setRecipients(
Message.RecipientType.TO,
InternetAddress.parse(ResourceBundle.getBundle("list")
.getString("list").trim()));

StringBuffer sb = new StringBuffer();
sb.append("ETS系统通知：\n\n\n");
SimpleDateFormat formatter = new SimpleDateFormat(
"yyyy年MM月dd日HH时mm分ss秒 ");
Date curDate = new Date(System.currentTimeMillis());
String strday = formatter.format(curDate);
sb.append("系统于" + strday + "监测到渠道头寸余额预警，信息如下：\n");
sb.append("机构号：" + orgId + "\n");
sb.append("机构名称：" + orgName + "\n");
sb.append("头寸名称：" + cashName + "\n");
sb.append("头寸金额(元)：" + totalAmount + "\n");
sb.append("预警值(元)：" + prewaringValue + "\n");
sb.append("此头寸余额已达预警值，请知悉！谢谢！" + "\n");
sb.append("-------------------------------------\n");
sb.append("ETS交易控制系统\n");
sb.append("-------------------------------------\n\n\n\n");
sb.append("免责声明：此电子邮件（包括任何附件）可能包含机密信息，仅限邮件上列出的收件人查看。严禁未经授权的披露、传播或使用任何此封电子邮件中所包含的信息。如果您错误地收到这封电子邮件，请通知发件人，并立即删除它。");
message.setText(sb.toString());

message.saveChanges();
Transport.send(message);
}

javaMail