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Jakarta Mail API

This is just a simple example to demonstrate a very basic usage of the API. It should be enough to get you started using the java mail packages.

#The Code

A simple REST service using the Jakarta Mail API

Here we see a very simple RESTful endpoint that can be called with a message to send by Email. It would not be hard to modify the application to provide more useful configuration options. As is, this will not send anything, but if you change the parameters to match your mail server then you’ll see the message being sent. You can find much more detailed information on the Javamail API here

package org.superbiz.rest;

import jakarta.annotation.Resource;
import jakarta.mail.Message;
import jakarta.mail.MessagingException;
import jakarta.mail.PasswordAuthentication;
import jakarta.mail.Session;
import jakarta.mail.Transport;
import jakarta.mail.URLName;
import jakarta.mail.internet.InternetAddress;
import jakarta.mail.internet.MimeMessage;
import jakarta.ws.rs.POST;
import jakarta.ws.rs.Path;
import java.util.Date;

@Path("/email")
public class EmailService {

    @Resource(mappedName = "java:comp/env/tomee/mail/exampleSMTP")
    private Session mailSession;

    @POST
    public String lowerCase(final String message) {

        try {

            /* Ensures that smtp authentication mechanism works as configured */
            boolean authenticate = "true".equals(mailSession.getProperty("mail.smtp.auth"));
            if (authenticate) {
                final String username = mailSession.getProperty("mail.smtp.user");
                final String password = mailSession.getProperty("mail.smtp.password");

                final URLName url = new URLName(
                        mailSession.getProperty("mail.transport.protocol"),
                        mailSession.getProperty("mail.smtp.host"), -1, null,
                        username, null);

                mailSession.setPasswordAuthentication(url, new PasswordAuthentication(username, password));
            } else {
                return "Using EMailService without SMTP auth configured. This might be valid, but could also be dangerous!";
            }

            //Set this just to see some internal logging
            mailSession.setDebug(true);

            //Create a message
            final MimeMessage msg = new MimeMessage(mailSession);
            msg.setFrom(new InternetAddress("admin@localhost")); //your e-mail address
            final InternetAddress[] address = {new InternetAddress("user@provider.com")};
            msg.setRecipients(Message.RecipientType.TO, address);
            msg.setSubject("JavaMail API test");
            msg.setSentDate(new Date());
            msg.setText(message, "UTF-8");

            Transport.send(msg);
        } catch (final MessagingException e) {
            return "Failed to send message: " + e.getMessage();
        }

        return "Sent";
    }
}

Testing

Test for the JAXRS service

The test uses the OpenEJB ApplicationComposer to make it trivial.

The idea is first to activate the jaxrs services. This is done using @EnableServices annotation.

Then we create on the fly the application simply returning an object representing the web.xml. Here we simply use it to define the context root but you can use it to define your REST Application too. And to complete the application definition we add @Classes annotation to define the set of classes to use in this app.

Finally to test it we use cxf client API to call the REST service post() method.

package org.superbiz.rest;

import com.icegreen.greenmail.util.GreenMail;
import com.icegreen.greenmail.util.ServerSetup;
import org.apache.cxf.jaxrs.client.WebClient;
import org.apache.openejb.jee.WebApp;
import org.apache.openejb.junit.ApplicationComposer;
import org.apache.openejb.testing.Classes;
import org.apache.openejb.testing.Configuration;
import org.apache.openejb.testing.EnableServices;
import org.apache.openejb.testing.Module;
import org.apache.openejb.util.NetworkUtil;
import org.junit.AfterClass;
import org.junit.BeforeClass;
import org.junit.Test;
import org.junit.runner.RunWith;

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

import static org.junit.Assert.assertEquals;

@EnableServices(value = "jaxrs")
@RunWith(ApplicationComposer.class)
public class EmailServiceTest {

    private static final int SMTP_TEST_PORT = NetworkUtil.getNextAvailablePort();

    private static final String USER_PASSWORD = "s3cr3t";
    private static final String USER_NAME = "admin@localhost";
    private static final String EMAIL_USER_ADDRESS = "admin@localhost";

    private static GreenMail mailServer;
    private static CountDownLatch started = new CountDownLatch(1);

    @Module
    @Classes(EmailService.class)
    public WebApp app() {
        return new WebApp().contextRoot("test");
    }

    @Configuration
    public Properties config() {
        //Note: We can also configure this via a resource.xml or via tomee.xml
        Properties properties = new Properties();
        properties.put("tomee/mail/mySMTP", "new://Resource?type=jakarta.mail.Session");
        properties.put("tomee/mail/mySMTP.mail.debug", "false");
        properties.put("tomee/mail/mySMTP.mail.transport.protocol", "smtp");
        properties.put("tomee/mail/mySMTP.mail.smtp.host", "localhost");
        properties.put("tomee/mail/mySMTP.mail.smtp.port", SMTP_TEST_PORT);
        properties.put("tomee/mail/mySMTP.mail.smtp.auth", "true");
        properties.put("tomee/mail/mySMTP.mail.smtp.user", USER_NAME);
        properties.put("tomee/mail/mySMTP.password", USER_PASSWORD);
        return properties;
    }

    @BeforeClass
    public static void setUp() throws InterruptedException {
        mailServer = new CustomGreenMailServer(new ServerSetup(SMTP_TEST_PORT, null, "smtp"));
        mailServer.start();

        //wait for the server startup...
        started.await();

        // create user on mail server
        mailServer.setUser(EMAIL_USER_ADDRESS, USER_NAME, USER_PASSWORD);
    }

    @AfterClass
    public static void tearDown() {
        if (mailServer != null) {
            mailServer.stop();
        }
    }

    @Test
    public void post() throws IOException {
        final String message = WebClient.create("http://localhost:4204").path("/test/email/").post("Hello TomEE", String.class);
        assertEquals("Sent", message);
    }

    public static class CustomGreenMailServer extends GreenMail {

        public CustomGreenMailServer(ServerSetup config) {
            super(new ServerSetup[]{config});
        }

        public synchronized void start() {
            super.start();
            started.countDown();
        }
    }
}

Running

Running the example is fairly simple. In the ``javamail-api'' directory run:

$ mvn clean install

Which should create output like the following.

Running org.superbiz.rest.EmailServiceTest
Mai 06, 2022 8:22:00 VORM. org.apache.openejb.util.LogStreamAsync run
INFORMATION: Created new singletonService org.apache.openejb.cdi.ThreadSingletonServiceImpl@5db250b4
Mai 06, 2022 8:22:00 VORM. org.apache.openejb.util.LogStreamAsync run
INFORMATION: Succeeded in installing singleton service
Mai 06, 2022 8:22:00 VORM. org.apache.openejb.util.LogStreamAsync run
INFORMATION: Cannot find the configuration file [conf/openejb.xml].  Will attempt to create one for the beans deployed.
Mai 06, 2022 8:22:00 VORM. org.apache.openejb.util.LogStreamAsync run
INFORMATION: Configuring Service(id=Default Security Service, type=SecurityService, provider-id=Default Security Service)
Mai 06, 2022 8:22:00 VORM. org.apache.openejb.util.LogStreamAsync run
INFORMATION: Configuring Service(id=Default Transaction Manager, type=TransactionManager, provider-id=Default Transaction Manager)
Mai 06, 2022 8:22:00 VORM. org.apache.openejb.util.LogStreamAsync run
INFORMATION: Configuring Service(id=tomee/mail/mySMTP, type=Resource, provider-id=Default Mail Session)
Mai 06, 2022 8:22:00 VORM. org.apache.openejb.util.LogStreamAsync run
INFORMATION: Creating TransactionManager(id=Default Transaction Manager)
Mai 06, 2022 8:22:00 VORM. org.apache.openejb.util.LogStreamAsync run
INFORMATION: Creating SecurityService(id=Default Security Service)
Mai 06, 2022 8:22:00 VORM. org.apache.openejb.util.LogStreamAsync run
INFORMATION: Creating Resource(id=tomee/mail/mySMTP)
Mai 06, 2022 8:22:00 VORM. org.apache.openejb.util.LogStreamAsync run
INFORMATION: Initializing network services
Mai 06, 2022 8:22:01 VORM. org.apache.openejb.util.LogStreamAsync run
INFORMATION: Creating ServerService(id=cxf-rs)
Mai 06, 2022 8:22:01 VORM. org.apache.openejb.util.LogStreamAsync run
INFORMATION: Creating ServerService(id=httpejbd)
Mai 06, 2022 8:22:01 VORM. org.apache.openejb.util.LogStreamAsync run
INFORMATION: Created ServicePool 'httpejbd' with (10) core threads, limited to (200) threads with a queue of (9)
Mai 06, 2022 8:22:01 VORM. org.apache.openejb.util.LogStreamAsync run
INFORMATION: Initializing network services
Mai 06, 2022 8:22:01 VORM. org.apache.openejb.util.LogStreamAsync run
INFORMATION:   ** Bound Services **
Mai 06, 2022 8:22:01 VORM. org.apache.openejb.util.LogStreamAsync run
INFORMATION:   NAME                 IP              PORT
Mai 06, 2022 8:22:01 VORM. org.apache.openejb.util.LogStreamAsync run
INFORMATION:   httpejbd             127.0.0.1       4204
Mai 06, 2022 8:22:01 VORM. org.apache.openejb.util.LogStreamAsync run
INFORMATION: -------
Mai 06, 2022 8:22:01 VORM. org.apache.openejb.util.LogStreamAsync run
INFORMATION: Ready!
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by org.apache.openejb.server.httpd.util.HttpUtil (file:/home/zowallar/.m2/repository/org/apache/tomee/openejb-http/9.0.0-M9-SNAPSHOT/openejb-http-9.0.0-M9-SNAPSHOT.jar) to field java.lang.reflect.Field.modifiers
WARNING: Please consider reporting this to the maintainers of org.apache.openejb.server.httpd.util.HttpUtil
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Mai 06, 2022 8:22:01 VORM. org.apache.openejb.util.LogStreamAsync run
INFORMATION: Configuring enterprise application: /home/zowallar/Downloads/tomee/examples/javamail/EmailServiceTest
Mai 06, 2022 8:22:01 VORM. org.apache.openejb.util.LogStreamAsync run
INFORMATION: Configuring Service(id=Default Managed Container, type=Container, provider-id=Default Managed Container)
Mai 06, 2022 8:22:01 VORM. org.apache.openejb.util.LogStreamAsync run
INFORMATION: Auto-creating a container for bean org.superbiz.rest.EmailServiceTest: Container(type=MANAGED, id=Default Managed Container)
Mai 06, 2022 8:22:01 VORM. org.apache.openejb.util.LogStreamAsync run
INFORMATION: Creating Container(id=Default Managed Container)
Mai 06, 2022 8:22:01 VORM. org.apache.openejb.util.LogStreamAsync run
INFORMATION: Using directory /tmp for stateful session passivation
Mai 06, 2022 8:22:01 VORM. org.apache.openejb.util.LogStreamAsync run
INFORMATION: Enterprise application "/home/zowallar/Downloads/tomee/examples/javamail/EmailServiceTest" loaded.
Mai 06, 2022 8:22:01 VORM. org.apache.openejb.util.LogStreamAsync run
INFORMATION: Creating dedicated application classloader for EmailServiceTest
Mai 06, 2022 8:22:01 VORM. org.apache.openejb.util.LogStreamAsync run
INFORMATION: Assembling app: /home/zowallar/Downloads/tomee/examples/javamail/EmailServiceTest
Mai 06, 2022 8:22:01 VORM. org.apache.openejb.util.LogStreamAsync run
INFORMATION: Ignoring XML Configuration for validator org.apache.bval.jsr.ConfigurationImpl
Mai 06, 2022 8:22:01 VORM. org.apache.batchee.container.services.ServicesManager init
WARNUNG: You didn't specify org.apache.batchee.jmx.application and JMX is already registered, skipping
Mai 06, 2022 8:22:01 VORM. org.apache.openejb.util.LogStreamAsync run
INFORMATION: Application{path='http://127.0.0.1:4204/test/', class=org.apache.openejb.server.rest.InternalApplication, resources=1, providers=0, invalids=0}
Mai 06, 2022 8:22:01 VORM. org.apache.openejb.util.LogStreamAsync run
INFORMATION: Resource{clazz=org.superbiz.rest.EmailService, discovered=false, singleton=false}
Mai 06, 2022 8:22:01 VORM. org.apache.openejb.util.LogStreamAsync run
INFORMATION: Using readers:
Mai 06, 2022 8:22:01 VORM. org.apache.openejb.util.LogStreamAsync run
INFORMATION:      org.apache.cxf.jaxrs.provider.PrimitiveTextProvider@71ad3d8a
Mai 06, 2022 8:22:01 VORM. org.apache.openejb.util.LogStreamAsync run
INFORMATION:      org.apache.cxf.jaxrs.provider.FormEncodingProvider@5477a1ca
Mai 06, 2022 8:22:01 VORM. org.apache.openejb.util.LogStreamAsync run
INFORMATION:      org.apache.cxf.jaxrs.provider.MultipartProvider@3ae9d1e2
Mai 06, 2022 8:22:01 VORM. org.apache.openejb.util.LogStreamAsync run
INFORMATION:      org.apache.cxf.jaxrs.provider.SourceProvider@41522537
Mai 06, 2022 8:22:01 VORM. org.apache.openejb.util.LogStreamAsync run
INFORMATION:      org.apache.cxf.jaxrs.provider.JAXBElementTypedProvider@e9dc4d0
Mai 06, 2022 8:22:01 VORM. org.apache.openejb.util.LogStreamAsync run
INFORMATION:      org.apache.cxf.jaxrs.provider.JAXBElementProvider@670d4d38
Mai 06, 2022 8:22:01 VORM. org.apache.openejb.util.LogStreamAsync run
INFORMATION:      org.apache.openejb.server.cxf.rs.johnzon.TomEEJsonpProvider@47af099e
Mai 06, 2022 8:22:01 VORM. org.apache.openejb.util.LogStreamAsync run
INFORMATION:      org.apache.openejb.server.cxf.rs.johnzon.TomEEJsonbProvider@131ff6fa
Mai 06, 2022 8:22:01 VORM. org.apache.openejb.util.LogStreamAsync run
INFORMATION:      org.apache.cxf.jaxrs.provider.StringTextProvider@700f518a
Mai 06, 2022 8:22:01 VORM. org.apache.openejb.util.LogStreamAsync run
INFORMATION:      org.apache.cxf.jaxrs.provider.BinaryDataProvider@b835727
Mai 06, 2022 8:22:01 VORM. org.apache.openejb.util.LogStreamAsync run
INFORMATION:      org.apache.cxf.jaxrs.provider.DataSourceProvider@13da7ab0
Mai 06, 2022 8:22:01 VORM. org.apache.openejb.util.LogStreamAsync run
INFORMATION: Using writers:
Mai 06, 2022 8:22:01 VORM. org.apache.openejb.util.LogStreamAsync run
INFORMATION:      org.apache.cxf.jaxrs.provider.JAXBElementTypedProvider@e9dc4d0
Mai 06, 2022 8:22:01 VORM. org.apache.openejb.util.LogStreamAsync run
INFORMATION:      org.apache.openejb.server.cxf.rs.johnzon.TomEEJsonpProvider@47af099e
Mai 06, 2022 8:22:01 VORM. org.apache.openejb.util.LogStreamAsync run
INFORMATION:      org.apache.johnzon.jaxrs.WadlDocumentMessageBodyWriter@2c8662ac
Mai 06, 2022 8:22:01 VORM. org.apache.openejb.util.LogStreamAsync run
INFORMATION:      org.apache.cxf.jaxrs.nio.NioMessageBodyWriter@260ff5b7
Mai 06, 2022 8:22:01 VORM. org.apache.openejb.util.LogStreamAsync run
INFORMATION:      org.apache.cxf.jaxrs.provider.StringTextProvider@700f518a
Mai 06, 2022 8:22:01 VORM. org.apache.openejb.util.LogStreamAsync run
INFORMATION:      org.apache.cxf.jaxrs.provider.PrimitiveTextProvider@71ad3d8a
Mai 06, 2022 8:22:01 VORM. org.apache.openejb.util.LogStreamAsync run
INFORMATION:      org.apache.cxf.jaxrs.provider.FormEncodingProvider@5477a1ca
Mai 06, 2022 8:22:01 VORM. org.apache.openejb.util.LogStreamAsync run
INFORMATION:      org.apache.cxf.jaxrs.provider.MultipartProvider@3ae9d1e2
Mai 06, 2022 8:22:01 VORM. org.apache.openejb.util.LogStreamAsync run
INFORMATION:      org.apache.cxf.jaxrs.provider.JAXBElementProvider@670d4d38
Mai 06, 2022 8:22:01 VORM. org.apache.openejb.util.LogStreamAsync run
INFORMATION:      org.apache.cxf.jaxrs.provider.SourceProvider@41522537
Mai 06, 2022 8:22:01 VORM. org.apache.openejb.util.LogStreamAsync run
INFORMATION:      org.apache.openejb.server.cxf.rs.johnzon.TomEEJsonbProvider@131ff6fa
Mai 06, 2022 8:22:01 VORM. org.apache.openejb.util.LogStreamAsync run
INFORMATION:      org.apache.cxf.jaxrs.provider.BinaryDataProvider@b835727
Mai 06, 2022 8:22:01 VORM. org.apache.openejb.util.LogStreamAsync run
INFORMATION:      org.apache.cxf.jaxrs.provider.DataSourceProvider@13da7ab0
Mai 06, 2022 8:22:01 VORM. org.apache.openejb.util.LogStreamAsync run
INFORMATION: Using exception mappers:
Mai 06, 2022 8:22:01 VORM. org.apache.openejb.util.LogStreamAsync run
INFORMATION:      org.apache.cxf.jaxrs.impl.WebApplicationExceptionMapper@150ede8b
Mai 06, 2022 8:22:01 VORM. org.apache.openejb.util.LogStreamAsync run
INFORMATION:      org.apache.openejb.server.cxf.rs.EJBExceptionMapper@d8d9199
Mai 06, 2022 8:22:01 VORM. org.apache.openejb.util.LogStreamAsync run
INFORMATION:      org.apache.cxf.jaxrs.validation.ValidationExceptionMapper@161f6623
Mai 06, 2022 8:22:01 VORM. org.apache.openejb.util.LogStreamAsync run
INFORMATION:      org.apache.openejb.server.cxf.rs.CxfRsHttpListener$CxfResponseValidationExceptionMapper@3e15bb06
Mai 06, 2022 8:22:01 VORM. org.apache.openejb.util.LogStreamAsync run
INFORMATION: REST Application: http://127.0.0.1:4204/test/      -> org.apache.openejb.server.rest.InternalApplication@72456279
Mai 06, 2022 8:22:01 VORM. org.apache.openejb.util.LogStreamAsync run
INFORMATION:      Service URI: http://127.0.0.1:4204/test/email -> Pojo org.superbiz.rest.EmailService
Mai 06, 2022 8:22:01 VORM. org.apache.openejb.util.LogStreamAsync run
INFORMATION:              POST http://127.0.0.1:4204/test/email ->      String lowerCase(String)
Mai 06, 2022 8:22:01 VORM. org.apache.openejb.util.LogStreamAsync run
INFORMATION: Deployed Application(path=/home/zowallar/Downloads/tomee/examples/javamail/EmailServiceTest)
Loading javamail.default.providers from jar:file:/home/zowallar/.m2/repository/org/apache/geronimo/mail/geronimo-mail_2.1_provider/1.0.0-SNAPSHOT/geronimo-mail_2.1_provider-1.0.0-SNAPSHOT.jar!/META-INF/javamail.default.providers
DEBUG: loading new provider protocol=smtp, className=org.apache.geronimo.mail.transport.smtp.SMTPTransport, vendor=Apache Software Foundation, version=1.0
DEBUG: loading new provider protocol=smtps, className=org.apache.geronimo.mail.transport.smtp.SMTPSTransport, vendor=Apache Software Foundation, version=1.0
DEBUG: loading new provider protocol=nntp-post, className=org.apache.geronimo.mail.transport.nntp.NNTPTransport, vendor=Apache Software Foundation, version=1.0
DEBUG: loading new provider protocol=nntp-posts, className=org.apache.geronimo.mail.transport.nntp.NNTPSSLTransport, vendor=Apache Software Foundation, version=1.0
DEBUG: loading new provider protocol=nntp, className=org.apache.geronimo.mail.store.nntp.NNTPStore, vendor=Apache Software Foundation, version=1.0
DEBUG: loading new provider protocol=nntps, className=org.apache.geronimo.mail.store.nntp.NNTPSSLStore, vendor=Apache Software Foundation, version=1.0
DEBUG: loading new provider protocol=pop3, className=org.apache.geronimo.mail.store.pop3.POP3Store, vendor=Apache Software Foundation, version=1.0
DEBUG: loading new provider protocol=pop3s, className=org.apache.geronimo.mail.store.pop3.POP3SSLStore, vendor=Apache Software Foundation, version=1.0
DEBUG: loading new provider protocol=imap, className=org.apache.geronimo.mail.store.imap.IMAPStore, vendor=Apache Software Foundation, version=1.0
DEBUG: loading new provider protocol=imaps, className=org.apache.geronimo.mail.store.imap.IMAPSSLStore, vendor=Apache Software Foundation, version=1.0
Loading javamail.default.providers from jar:file:/home/zowallar/.m2/repository/com/sun/mail/jakarta.mail/2.0.1/jakarta.mail-2.0.1.jar!/META-INF/javamail.default.providers
DEBUG: loading new provider protocol=imap, className=com.sun.mail.imap.IMAPStore, vendor=Oracle, version=null
DEBUG: loading new provider protocol=imaps, className=com.sun.mail.imap.IMAPSSLStore, vendor=Oracle, version=null
DEBUG: loading new provider protocol=smtp, className=com.sun.mail.smtp.SMTPTransport, vendor=Oracle, version=null
DEBUG: loading new provider protocol=smtps, className=com.sun.mail.smtp.SMTPSSLTransport, vendor=Oracle, version=null
DEBUG: loading new provider protocol=pop3, className=com.sun.mail.pop3.POP3Store, vendor=Oracle, version=null
DEBUG: loading new provider protocol=pop3s, className=com.sun.mail.pop3.POP3SSLStore, vendor=Oracle, version=null
Loading javamail.default.providers from jar:file:/home/zowallar/.m2/repository/org/apache/geronimo/mail/geronimo-mail_2.1_provider/1.0.0-SNAPSHOT/geronimo-mail_2.1_provider-1.0.0-SNAPSHOT.jar!/META-INF/javamail.default.providers
DEBUG: loading new provider protocol=smtp, className=org.apache.geronimo.mail.transport.smtp.SMTPTransport, vendor=Apache Software Foundation, version=1.0
DEBUG: loading new provider protocol=smtps, className=org.apache.geronimo.mail.transport.smtp.SMTPSTransport, vendor=Apache Software Foundation, version=1.0
DEBUG: loading new provider protocol=nntp-post, className=org.apache.geronimo.mail.transport.nntp.NNTPTransport, vendor=Apache Software Foundation, version=1.0
DEBUG: loading new provider protocol=nntp-posts, className=org.apache.geronimo.mail.transport.nntp.NNTPSSLTransport, vendor=Apache Software Foundation, version=1.0
DEBUG: loading new provider protocol=nntp, className=org.apache.geronimo.mail.store.nntp.NNTPStore, vendor=Apache Software Foundation, version=1.0
DEBUG: loading new provider protocol=nntps, className=org.apache.geronimo.mail.store.nntp.NNTPSSLStore, vendor=Apache Software Foundation, version=1.0
DEBUG: loading new provider protocol=pop3, className=org.apache.geronimo.mail.store.pop3.POP3Store, vendor=Apache Software Foundation, version=1.0
DEBUG: loading new provider protocol=pop3s, className=org.apache.geronimo.mail.store.pop3.POP3SSLStore, vendor=Apache Software Foundation, version=1.0
DEBUG: loading new provider protocol=imap, className=org.apache.geronimo.mail.store.imap.IMAPStore, vendor=Apache Software Foundation, version=1.0
DEBUG: loading new provider protocol=imaps, className=org.apache.geronimo.mail.store.imap.IMAPSSLStore, vendor=Apache Software Foundation, version=1.0
Loading javamail.default.providers from jar:file:/home/zowallar/.m2/repository/com/sun/mail/jakarta.mail/2.0.1/jakarta.mail-2.0.1.jar!/META-INF/javamail.default.providers
DEBUG: loading new provider protocol=imap, className=com.sun.mail.imap.IMAPStore, vendor=Oracle, version=null
DEBUG: loading new provider protocol=imaps, className=com.sun.mail.imap.IMAPSSLStore, vendor=Oracle, version=null
DEBUG: loading new provider protocol=smtp, className=com.sun.mail.smtp.SMTPTransport, vendor=Oracle, version=null
DEBUG: loading new provider protocol=smtps, className=com.sun.mail.smtp.SMTPSSLTransport, vendor=Oracle, version=null
DEBUG: loading new provider protocol=pop3, className=com.sun.mail.pop3.POP3Store, vendor=Oracle, version=null
DEBUG: loading new provider protocol=pop3s, className=com.sun.mail.pop3.POP3SSLStore, vendor=Oracle, version=null
DEBUG: getProvider() returning provider protocol=smtp; type=jakarta.mail.Provider$Type@38dbbb2d; class=org.apache.geronimo.mail.transport.smtp.SMTPTransport; vendor=Apache Software Foundation;version=1.0
smtp DEBUG: Failing connection for missing authentication information
smtp DEBUG: Attempting plain socket connection to server localhost:44959
220 /127.0.0.1 GreenMail SMTP Service v2.0.0-alpha-2 ready
EHLO node-147
250-/127.0.0.1
250 AUTH PLAIN LOGIN
smtp DEBUG: Processing extension AUTH PLAIN LOGIN
smtp DEBUG: Authenticating for user: admin@localhost using LOGIN
AUTH LOGIN
334 VXNlcm5hbWU6
YWRtaW5AbG9jYWxob3N0
334 UGFzc3dvcmQ6
czNjcjN0
235 2.7.0  Authentication Succeeded
smtp DEBUG: Successful SMTP authentication
smtp DEBUG: Successful connection
MAIL FROM: <admin@localhost>
250 OK
RCPT TO: <user@provider.com>
250 OK
DATA
354 Start mail input; end with <CRLF>.<CRLF>
Date: Fri, 6 May 2022 08:22:02 +0200 (CEST)
From: admin@localhost
To: user@provider.com
Message-ID: <1276594763.01651818122213.JavaMail.zowallar@node-147>
Subject: JavaMail API test
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 7bit

Hello TomEE
.
250 OK
QUIT
221 /127.0.0.1 Service closing transmission channel
Mai 06, 2022 8:22:02 VORM. com.icegreen.greenmail.user.UserManager$1 handle
INFORMATION: Created user login user@provider.com for address user@provider.com with password user@provider.com because it didn't exist before.
Mai 06, 2022 8:22:02 VORM. org.apache.openejb.util.LogStreamAsync run
INFORMATION: Undeploying app: /home/zowallar/Downloads/tomee/examples/javamail/EmailServiceTest
Mai 06, 2022 8:22:02 VORM. org.apache.openejb.util.LogStreamAsync run
INFORMATION: Stopping network services
Mai 06, 2022 8:22:02 VORM. org.apache.openejb.util.LogStreamAsync run
INFORMATION: Stopping server services

APIs Used