Email with Attachments (Java)¶

import com.azure.communication.email.EmailClient;
import com.azure.communication.email.EmailClientBuilder;
import com.azure.communication.email.models.EmailAttachment;
import com.azure.communication.email.models.EmailMessage;
import com.azure.communication.email.models.EmailRecipients;
import com.azure.communication.email.models.EmailAddress;
import com.azure.communication.email.models.EmailContent;
import com.azure.core.util.BinaryData;

import java.nio.file.Files;
import java.nio.file.Path;
import java.util.Base64;

public class EmailWithAttachmentsExample {
    public static void main(String[] args) throws Exception {
        String connectionString = System.getenv("ACS_EMAIL_CONNECTION_STRING");
        String sender = "DoNotReply@contoso.com";
        String recipient = "user@contoso.com";

        EmailClient client = new EmailClientBuilder()
            .connectionString(connectionString)
            .buildClient();

        byte[] invoiceBytes = Files.readAllBytes(Path.of("invoice.pdf"));
        byte[] logoBytes = Files.readAllBytes(Path.of("logo.png"));

        // Base64 is useful when you need to inspect or forward the payload yourself.
        String invoiceBase64 = Base64.getEncoder().encodeToString(invoiceBytes);
        System.out.println("Invoice bytes (base64 preview): " + invoiceBase64.substring(0, 24) + "...");

        EmailAttachment invoice = new EmailAttachment(
            "invoice.pdf",
            "application/pdf",
            BinaryData.fromBytes(invoiceBytes));

        EmailAttachment logo = new EmailAttachment(
            "logo.png",
            "image/png",
            BinaryData.fromBytes(logoBytes));

        EmailAttachment csv = new EmailAttachment(
            "summary.csv",
            "text/csv",
            BinaryData.fromBytes(Files.readAllBytes(Path.of("summary.csv"))));

        EmailMessage message = new EmailMessage()
            .setSenderAddress(sender)
            .setRecipients(new EmailRecipients().setTo(List.of(new EmailAddress(recipient))))
            .setContent(new EmailContent()
                .setSubject("Monthly package")
                .setPlainText("Attached are the invoice, logo, and summary.")
                .setHtml("<p>Attached are the invoice, logo, and summary.</p>"));

        message.getAttachments().add(invoice);
        message.getAttachments().add(logo);
        message.getAttachments().add(csv);

        client.send(message);
        System.out.println("Message queued.");
    }
}