依賴

compile 'com.sun.mail:android-mail:1.5.5'
compile 'com.sun.mail:android-activation:1.5.5'

使用

//創(chuàng)建配置文件
Properties props = new Properties();
//開啟認(rèn)證
props.put("mail.smtp.auth", true);
//設(shè)置協(xié)議方式
props.put("mail.transport.protocol", "smtp");
//設(shè)置主機(jī)名
props.put("mail.smtp.host", String host);
//設(shè)置SSL加密(未采用SSL時(shí)，端口一般為25，可以不用設(shè)置；采用SSL時(shí)，端口為465，需要顯示設(shè)置)
props.setProperty("mail.smtp.port", String port);
props.setProperty("mail.smtp.socketFactory.class", "javax.net.ssl.SSLSocketFactory");
props.setProperty("mail.smtp.socketFactory.fallback", "false");
props.setProperty("mail.smtp.socketFactory.port", String port);
//設(shè)置賬戶和密碼
props.put("mail.smtp.username",String username);
props.put("mail.smtp.password",String password);
//創(chuàng)建會(huì)話，getDefaultInstace得到的始終是該方法初次創(chuàng)建的缺省的對象，getInstace每次獲取新對象
Session session = Session.getInstance(props,new SmtpAuthenticator());
//顯示錯(cuò)誤信息
session.setDebug(true);
//創(chuàng)建發(fā)送時(shí)的消息對象
MimeMessage message = new MimeMessage(session);
//設(shè)置發(fā)送發(fā)的賬戶和名稱
message.setFrom(new InternetAddress(String senderAccount,String senderName,"UTF-8"));
//獲取收件方的賬戶和名稱
message.setRecipients(MimeMessage.RecipientType.TO,String receiverAccount);
//設(shè)置主題
message.setSubject(emailMessage.getSubject());
//設(shè)置內(nèi)容
message.setContent(String content,"text/html;charset=UTF-8");
//發(fā)送
Transport.send(message);

登錄認(rèn)證類

private static class SmtpAuthenticator extends Authenticator {    
private String mUsername ;    
private String mPassword ;    
public SmtpAuthenticator(String username，String password) {        
    super();        
    this.mUsername = username;        
    this.mPassword = password;    
}    
@Override    
public PasswordAuthentication getPasswordAuthentication() {        
    if ((mUsername != null) && (mUsername.length() > 0) && (mPassword != null)&& (mPassword.length() > 0)) {           
        return new PasswordAuthentication(mUsername, mPassword);      
  }      
 return null;    
}