How to read unread mails from smtp.office365.com host using java

To read unread emails from smtp.office365.com host using Java, you'll need to use a Java Mail API library and follow these steps:

Prerequisites:

1. You have an Office 365 account with SMTP access.
2. You have a Java development environment set up with the Java Mail API library.

Step 1: Set up your Office 365 account

To access your Office 365 account via SMTP, you'll need to enable less secure apps or generate an app password. Follow these steps:

1. Go to the Office 365 account settings page.
2. Click on "Security & privacy" and then "Sign-in and security".
3. Under "Additional security features", toggle the switch to "Allow less secure apps" (or generate an app password if you prefer).
4. Note down your Office 365 email address and password (or app password).

Step 2: Set up your Java Mail API

Add the Java Mail API library to your project. You can use Maven or Gradle to manage dependencies. Here's an example Maven dependency:

<dependency>
    <groupId>com.sun.mail</groupId>
    <artifactId>javax.mail</artifactId>
    <version>1.6.2</version>
</dependency>

Step 3: Connect to Office 365 SMTP server

Create a Java class to connect to the Office 365 SMTP server using the Java Mail API:

import javax.mail.*;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;
import java.util.Properties;

public class Office365SMTP {
    public static void main(String[] args) {
        // Set up properties
        Properties props = new Properties();
        props.put("mail.store.protocol", "imaps");
        props.put("mail.imap.host", "imap.office365.com");
        props.put("mail.imap.port", "993");
        props.put("mail.imap.starttls.enable", "true");
        props.put("mail.smtp.auth", "true");
        props.put("mail.smtp.starttls.enable", "true");
        props.put("mail.smtp.host", "smtp.office365.com");
        props.put("mail.smtp.port", "587");

        // Set up authentication
        String username = "[email protected]";
        String password = "your_office_365_password";

        // Create a session
        Session session = Session.getInstance(props, new Authenticator() {
            @Override
            protected PasswordAuthentication getPasswordAuthentication() {
                return new PasswordAuthentication(username, password);
            }
        });

        // Create a store
        Store store = session.getStore();

        // Connect to the store
        store.connect();

        // Get the inbox folder
        Folder inbox = store.getFolder("INBOX");

        // Get unread emails
        Message[] messages = inbox.getMessages();
        for (Message message : messages) {
            if (!message.isSet(Flags.Flag.SEEN)) {
                // Process the unread email
                System.out.println("Unread email: " + message.getSubject());
            }
        }
    }
}

Step 4: Process the unread emails

In the above code, we're iterating through the inbox folder and checking if each message is unread (i.e., Flags.Flag.SEEN is not set). If it's unread, we're printing the subject of the email. You can modify this code to process the email content, attachments, or other properties as needed.

Note: Make sure to replace [email protected] and your_office_365_password with your actual Office 365 email address and password (or app password).

This code should help you read unread emails from your Office 365 account using Java.