did SubethaSmtp store emails somewhere? - smtp

Question

I use the SubethaSmtp library as an email server and so far I have been able to run this server and test it by sending an email. Email information is printed in the output. As far as I know, smtp protocol is used to send emails. While IMAP protocol is used to receive emails. My question is, did SubethaSmtp store emails somewhere (such as a database or file)? In general, do I need a server other than SubethaSmtp server to receive emails? What will be the relationship between these two protocols?
My code is written in the following two Java classes:
BasicSMTPServer class:
package com.sojoodi;
import org.subethamail.smtp.server.SMTPServer;
public class BasicSMTPServer {
public static void main(String[] args) {
MyMessageHandlerFactory myFactory = new MyMessageHandlerFactory();
SMTPServer smtpServer = new SMTPServer(myFactory);
smtpServer.setPort(25000);
smtpServer.start();
System.out.println("smtpServer = " + smtpServer);
System.out.println("HostName = " + smtpServer.getHostName());
}
}
and MyMessageHandlerFactory class:
package com.sojoodi;
import org.subethamail.smtp.*;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
public class MyMessageHandlerFactory implements MessageHandlerFactory {
public MessageHandler create(MessageContext ctx) {
return new Handler(ctx);
}
class Handler implements MessageHandler {
MessageContext ctx;
public Handler(MessageContext ctx) {
this.ctx = ctx;
}
public void from(String from) throws RejectException {
System.out.println("FROM:"+from);
}
public void recipient(String recipient) throws RejectException {
System.out.println("RECIPIENT:"+recipient);
}
public void data(InputStream data) throws IOException {
System.out.println("MAIL DATA");
System.out.println("= = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =");
System.out.println(this.convertStreamToString(data));
System.out.println("= = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =");
}
public void done() {
System.out.println("Finished");
}
public String convertStreamToString(InputStream is) {
BufferedReader reader = new BufferedReader(new InputStreamReader(is));
StringBuilder sb = new StringBuilder();
String line = null;
try {
while ((line = reader.readLine()) != null) {
sb.append(line + "\n");
}
} catch (IOException e) {
e.printStackTrace();
}
return sb.toString();
}
}
}

Answer 1

Maybe you can check the Receive emails with SubEtha SMTP and Spring Boot post and for you question about storing you can check the issues section in the related code repository as there is an issue same as yours.