我为此创建了开源库.用法很简单:

I create open source library for this. Usage is very simple:

BackgroundMail bm = new BackgroundMail(context);
bm.setGmailUserName("yourgmail@gmail.com");
bm.setGmailPassword("yourgmailpassword");
bm.setMailTo("receiver@gmail.com");
bm.setFormSubject("Subject");
bm.setFormBody("Body");
bm.send();

拥有此权限

<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
<uses-permission android:name="android.permission.INTERNET"/> 

你可以在这里下载:https://github.com/kristijandraca/BackgroundMailLibrary