Send emails with Java API

import com.mailersend.sdk.Email;
import com.mailersend.sdk.MailerSend;
import com.mailersend.sdk.MailerSendResponse;
import com.mailersend.sdk.exceptions.MailerSendException;

public void sendEmail() {

    Email email = new Email();

    email.setFrom("name", "your email");
    email.addRecipient("name", "your@recipient.com");

    // you can also add multiple recipients by calling addRecipient again
    email.addRecipient("name 2", "your@recipient2.com");

    // there's also a recipient object you can use
    Recipient recipient = new Recipient("name", "your@recipient3.com");
    email.AddRecipient(recipient);
    
    email.setSubject("Email subject");

    email.setPlain("This is the text content");
    email.setHtml("This is the HTML content");

    MailerSend ms = new MailerSend();

    ms.setToken("Your API token");

    try {    
        MailerSendResponse response = ms.emails().send(email);
        System.out.println(response.messageId);
    } catch (MailerSendException e) {
        e.printStackTrace();
    }
}

import com.mailersend.sdk.emails.Email;
import com.mailersend.sdk.MailerSend;
import com.mailersend.sdk.Recipient;
import com.mailersend.sdk.MailerSendResponse;
import com.mailersend.sdk.exceptions.MailerSendException;

public class MailerSendExample {

    public static void main(String[] args) {
        sendEmail(); // Call the sendEmail method
    }

    public static void sendEmail() {

        // Retrieve the API token from the environment variable
        String apiToken = System.getenv("MAILERSEND_API_KEY");

        // Check if the environment variable is set
        if (apiToken == null || apiToken.isEmpty()) {
            System.err.println("❌ API token not found. Please set the MAILERSEND_API_KEY environment variable.");
            return; // Exit the method if the token is missing
        }

        // Initialize the MailerSend instance with the API token from the environment variable
        MailerSend ms = new MailerSend();
        ms.setToken(apiToken);

        // Create the email object
        Email email = new Email();
        email.setFrom("Your name", "Your email");
        email.addRecipient("Recipient name", "name@example.com");

        // Or use the recipient object 
        Recipient recipient = new Recipient("Name 2", "name2@example.com");
        email.AddRecipient(recipient);


        // Set the MailerSend template ID
        email.setTemplateId("3z7vklo8jng47qkge");

        email.addPersonalization("name", "John");
        email.addPersonalization("email", "john@example.com");

        try {
            // Send the email
            MailerSendResponse response = ms.emails().send(email);
            System.out.println("✅ Email sent! Message ID: " + response.messageId);
        } catch (MailerSendException e) {
            System.err.println("❌ Failed to send email:");
            e.printStackTrace();
        }
    }
}

import com.mailersend.sdk.emails.Email;
import com.mailersend.sdk.MailerSend;
import com.mailersend.sdk.MailerSendResponse;
import com.mailersend.sdk.exceptions.MailerSendException;

import java.io.File;
import java.io.IOException;

public class MailerSendExample {

    public static void main(String[] args) {
        sendEmail(); 
    }

    public static void sendEmail() {

        String apiToken = System.getenv("MAILERSEND_API_KEY");
        if (apiToken == null || apiToken.isEmpty()) {
            System.err.println("❌ API token not found. Please set the MAILERSEND_API_KEY environment variable.");
            return; // Exit the method if the token is missing
        }

        MailerSend ms = new MailerSend();
        ms.setToken(apiToken);

        Email email = new Email();
        email.setFrom("Your name", "Your email");
        email.addRecipient("Name", "name@example.com");

        email.setSubject("This is a test");
        email.setPlain("This is the text content for the test email with an attachment.");
        email.setHtml("
This is the HTML content for the test email with an attachment.
");

        // Attach a file from the filesystem
        File file = new File("invoice.pdf");
        try {
            if (file.exists()) {
                email.attachFile(file);
            } else {
                System.err.println("❌ Attachment file not found: invoice.pdf");
                return;
            }
        } catch (IOException e) {
            System.err.println("❌ Failed to attach file:");
            e.printStackTrace();
            return;
        }

        try {
            MailerSendResponse response = ms.emails().send(email);
            System.out.println("✅ Email sent! Message ID: " + response.messageId);
        } catch (MailerSendException e) {
            System.err.println("❌ Failed to send email:");
            e.printStackTrace();
        }
    }
}