CODEWITHSUNDEEP
javaspringspring-mvcspring-bootjakarta-mail
Loga Nathan
Loga Nathan

Reputation: 133

Spring boot read and new mail Listener on spring-boot-starter-mail

I want to demonstrate the email application using the spring boot MVC in that web application I follow this tutorial I can easily send the emails using spring boot.

Here my question is

  1. how can I read the emails using spring boot..?
  2. how can I listen for new emails and how to update the inbox on the view..?

please suggest me any solutions for that because I searched a lot but I can find only send email example.please share me if you have any working samples for that using spring boot. Thanks in advance.

Upvotes: 1

Views: 22469

Answers (4)

Sushant Patewar
Sushant Patewar

Reputation: 184

Sharing another solution with a working example:

Read incoming emails with JavaMail API, IMAP protocol and IMAP IDLE feature.

  1. Use JavaMail API for IMAP connection which provides implementation for IMAP.
  2. For monitoring we need IMAP IDLE feature, which allows our application to receive immediate notifications when new messages arrive in the mailbox, rather than relying on periodic polling.

Refer detailed implementation of this here: https://medium.com/@sushant7/how-to-monitor-incoming-emails-in-a-spring-boot-application-indefinitely-7dabbdb74b2d

Upvotes: 0

Sushant Kumar Rout
Sushant Kumar Rout

Reputation: 109

package com.grandview.service;

import java.io.IOException;
import java.util.Properties;

import javax.annotation.PostConstruct;
import javax.mail.Folder;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.Session;
import javax.mail.Store;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.scheduling.annotation.Scheduled;
import org.springframework.stereotype.Service;

import com.grandview.model.EmailConfig;
import com.grandview.util.MessageParser;

@Service
public class EmailService {
    @Autowired
    private EmailConfig emailConfig;

    Folder emailFolder;
    Store store;
    Properties properties = new Properties();

    @PostConstruct
    void setup() {
        String server = emailConfig.getHost();
        properties.put("mail.pop3.host", server);
        properties.put("mail.pop3.port", emailConfig.getPort());
        //properties.put("mail.pop3.starttls.enable", "true");
        Session emailSession = Session.getDefaultInstance(properties);
        Store store = null;
        try {
            store = emailSession.getStore("pop3s");
            store.connect(server, emailConfig.getUsername(), emailConfig.getPassword());
            emailFolder = store.getFolder("INBOX");
        } catch (MessagingException e) {
            e.printStackTrace();
        }
    }

    @Scheduled(fixedRate = 5000)
    synchronized void read() throws MessagingException, IOException {
        emailFolder.open(Folder.READ_ONLY);
        Message[] messages = emailFolder.getMessages();
        for (int i = 0; i < messages.length; i++) {
            Message message = messages[i];
            System.out.println(MessageParser.getMessageBody(message));
        }
        emailFolder.close();
    }
}

Upvotes: 3

redoff
redoff

Reputation: 1144

If you're asking about how to receive emails based on Spring Boot and a Java library for mail-receiving (e.g Subetha SMTP), you can check Receive emails with SubEtha SMTP and Spring Boot

Upvotes: 1

alexmagnus
alexmagnus

Reputation: 1006

You could consider using Spring integration mail support

There is a Java DSL for this purposes.
An example of IMAP config could be found here

The key aspects are like this 

@Configuration
@EnableIntegration
public class IntegrationConfig {
    ...

    @Bean
    public IntegrationFlow imapIdleFlow() {
        return IntegrationFlows
                .from(Mail.imapIdleAdapter("imap://user:pw@localhost:" + imapIdleServer.getPort() + "/INBOX")
                        .autoStartup(true)
                        .searchTermStrategy(this::fromAndNotSeenTerm)
                        .userFlag("testSIUserFlag")
                        .javaMailProperties(p -> p.put("mail.debug", "false")
                                .put("mail.imap.connectionpoolsize", "5"))
                        .shouldReconnectAutomatically(false)
                        .headerMapper(mailHeaderMapper()))
                .channel(MessageChannels.queue("imapIdleChannel"))
                .get();
    }

    @Bean
    public HeaderMapper<MimeMessage> mailHeaderMapper() {
        return new DefaultMailHeaderMapper();
    }

    private SearchTerm fromAndNotSeenTerm(Flags supportedFlags, Folder folder) {
        try {
            FromTerm fromTerm = new FromTerm(new InternetAddress("bar@baz"));
            return new AndTerm(fromTerm, new FlagTerm(new Flags(Flags.Flag.SEEN), false));
        }
        catch (AddressException e) {
            throw new RuntimeException(e);
        }

    }
}

Upvotes: 6

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