How To Send Email In Android Or Java With Proxy Server.



import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.Properties;
import javax.mail.Authenticator;import javax.mail.Message;
import javax.mail.PasswordAuthentication;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;
public class EMailSender {
public EMailSender(String host, final String from, final String pass, String to, String sub, String mess) throws Exception {
Properties props = System.getProperties();
props.put("mail.smtp.auth", "true");
props.put("mail.smtp.starttls.enable", "true");
props.put("mail.smtp.host", host);
Authenticator auth = new Authenticator() {

protected PasswordAuthentication getPasswordAuthentication() {
return new PasswordAuthentication(from, pass);
}};
Session session = Session.getInstance(props, auth);
Message message = new MimeMessage(session);
message.setFrom(new InternetAddress(from));
message.setRecipients(Message.RecipientType.TO, InternetAddress.parse(to));
message.setSubject(sub);
message.setText(mess);
Transport.send(message);
}

public static void main(String arg[]) throws Exception {
if(arg.length == 5) {
StringBuilder message = new StringBuilder();
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
String temp = "", subject;
System.out.print("Enter subject: ");
subject = br.readLine();
System.out.println("Enter the message (end it with a . on a single line):");
while((temp = br.readLine()) != null) {
if(temp.equals("."))
break;
message.append(temp+"\n");
}
System.out.println("Sending message...");
new EMailSender(arg[0], arg[1], arg[2], arg[3], subject, message.toString());
System.out.println("Sent the message.");
}
else System.err.println("Usage:\njava SendTextMail <host> <port> <from> <pass> <to>");
}
}

Call Constructor Of This Class In Your Activity On Button Click.