How to Send Transactional Emails With JAVA? (3 Methods With Codes - JavaMail API, Simple Java Mail & SuprSend)

       
          Session session = Session.getInstance(properties, new javax.mail.Authenticator() {
              protected PasswordAuthentication getPasswordAuthentication() {
                  return new PasswordAuthentication("sender@gmail.com", "password");
              }
          });
        
    

        
            MimeMessage message = new MimeMessage(session);
            // Sender email
            message.setFrom(new InternetAddress(from));
            // Receiver email
            message.addRecipient(Message.RecipientType.TO, new InternetAddress(to));
            // Email subject
            message.setSubject("This is the email subject");
            // Email body
            message.setText("This is the email body");
        
    

        
            Multipart multipart = new MimeMultipart();

            // Create a BodyPart for the main email content
            BodyPart messageBodyPart = new MimeBodyPart();
            messageBodyPart.setText("This is the email body");

            // Add the main content BodyPart to the Multipart
            multipart.addBodyPart(messageBodyPart);

            // Create a BodyPart for the attachment
            messageBodyPart = new MimeBodyPart();
            DataSource source = new FileDataSource("path/to/attachment.txt"); 
            messageBodyPart.setDataHandler(new DataHandler(source));
            messageBodyPart.setFileName("attachment.txt");

            // Add the attachment BodyPart to the Multipart
            multipart.addBodyPart(messageBodyPart);

            // Set the Multipart as the message content
            message.setContent(multipart);
        
    

        
            Transport.send(message);
        
    

        
          // Import statements and package declaration

          public class SendMail {
              public static void main(String[] args) {
                // Email details
                String to = "receiver@gmail.com";
                String from = "sender@gmail.com";
                String host = "smtp.gmail.com";

                // System properties and configuration
                Properties properties = System.getProperties();
                properties.put("mail.smtp.host", host);
                properties.put("mail.smtp.port", "465");
                properties.put("mail.smtp.ssl.enable", "true");
                properties.put("mail.smtp.auth", "true");

                // Session setup with authentication
                Session session = Session.getInstance(properties, new javax.mail.Authenticator(){
                  protected PasswordAuthentication getPasswordAuthentication() {
                    return new PasswordAuthentication("sender@gmail.com", "password");
                  }
                });

                try {
                  // Creating and configuring the MimeMessage
                  MimeMessage message = new MimeMessage(session);
                  message.setFrom(new InternetAddress(from));
                  message.addRecipient(Message.RecipientType.TO, new InternetAddress(to));
                  message.setSubject("This is the email subject");

                  // Adding Attachments
                  Multipart multipart = new MimeMultipart();
                  BodyPart messageBodyPart = new MimeBodyPart();
                  messageBodyPart.setText("This is the email body");
                  multipart.addBodyPart(messageBodyPart);

                  messageBodyPart = new MimeBodyPart();
                  DataSource source = new FileDataSource("path/to/attachment.txt"); 
                  messageBodyPart.setDataHandler(new DataHandler(source));
                  messageBodyPart.setFileName("attachment.txt");
                  multipart.addBodyPart(messageBodyPart);

                  message.setContent(multipart);

                  // Sending the email
                  Transport.send(message);
                } catch (MessagingException mex) {
                  mex.printStackTrace();
                }
             }
          }
                      
        
    

        
            Email email = EmailBuilder.startingBlank()
                .from("From", "from@example.com")
                .to("1st Receiver", "rec1@example.com")
                .to("2nd Receiver", "rec2@example.com")
                .withSubject("Enhanced Email with HTML and Attachments")
                .withHTMLText("Hello! This is an enhanced email with HTML content.")
                .withAttachment("path/to/attachment.txt") 
                .buildEmail();            
        
    

        
            Mailer mailer = MailerBuilder
                .withSMTPServer("smtp.mailtrap.io", 2525, "username", "password")
                .withTransportStrategy(TransportStrategy.SMTPS)
                .buildMailer();
        
    

        
            mailer.sendMail(email);
        
    

        
            // Import statements and package declaration

            public class SendEnhancedMail {
                public static void main(String[] args) {
                    // Create an Email object with HTML and Attachments using EmailBuilder
                    Email email = EmailBuilder.startingBlank()
                        .from("From", "from@example.com")
                        .to("1st Receiver", "case1@example.com")
                        .to("2nd Receiver", "case2@example.com")
                        .withSubject("Enhanced Email with HTML and Attachments")
                        .withHTMLText("Hello! This is an enhanced email with HTML content.")
                        .withAttachment("path/to/attachment.txt") 
                        .buildEmail();

                    // Create a Mailer object using MailerBuilder
                    Mailer mailer = MailerBuilder
                        .withSMTPServer("smtp.mailtrap.io", 2525, "username", "password")
                        .withTransportStrategy(TransportStrategy.SMTPS)
                        .buildMailer();

                    // Send the Enhanced Email
                    mailer.sendMail(email);
                }
            }
        
    

        
            <dependencies>
              <dependency>
                <groupId>com.suprsend</groupId>
                <artifactId>suprsend-java-sdk</artifactId>
                <version>0.5.0</version>
              </dependency>
            </dependencies>
        
    

        
            package tests;

            import java.io.File;
            import java.io.FileInputStream;
            import java.io.FileNotFoundException;
            import java.io.InputStream;

            import org.json.JSONObject;
            import org.json.JSONTokener;

            import suprsend.Suprsend;

            public class TestSuprsendSDK {

                private JSONObject loadBody(String fileName) throws FileNotFoundException {
                    JSONObject jsonObject;
                    String relativePath = String.format("%s/src/%s/resources/%s.json", System.getProperty("user.dir"),
                            this.getClass().getPackage().getName(), fileName);
                    InputStream schemaStream = new FileInputStream(new File(relativePath));
                    jsonObject = new JSONObject(new JSONTokener(schemaStream));
                    return jsonObject;
                }

                public static void main(String[] args) throws Exception {
                    TestSuprsendSDK sdk = new TestSuprsendSDK();
                    // Load workflow body json
                    JSONObject body = sdk.loadBody("input");
                    // SDK instance
                    Suprsend suprsend = new Suprsend("WORKSPACE KEY", "WORKSPACE KEY");
                    Workflow wf = new Workflow(body, idempotencyKey, brandId)

                    // Trigger workflow
                    JSONObject resp = suprClient.triggerWorkflow(wf);
                    System.out.println(resp);
                }

            }}