Java

Set the Content-Disposition of an Attachment

Demonstrates the Chilkat Email.SetAttachmentDisposition method, which sets the Content-Disposition value for the attachment at a given zero-based index. The default disposition is attachment. This example changes an attachment's disposition to inline.

Background: The Content-Disposition header hints how a client should present a part: attachment means "offer it as a download," while inline means "display it within the message" (as an email client does with an embedded image). Setting it lets you control that behavior — though clients ultimately decide how to honor the hint.

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import com.chilkatsoft.chilkat2.ChilkatException;
import com.chilkatsoft.chilkat2.Email;

public class ChilkatExample {

    public static void main(String[] args) {
        // Demonstrates the SetAttachmentDisposition method, which sets the Content-Disposition
        // value for the attachment at the given zero-based index.  The default disposition is
        // "attachment".

        Email email = new Email();
        email.setSubject("Set attachment disposition");

        email.addStringAttachment("image.txt", "(pretend inline content)");

        // Set the disposition of the first attachment (index 0) to "inline".
        try {
            email.setAttachmentDisposition(0, "inline");
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
            return;
        }

        // The attachment's Content-Disposition is now "inline".
        System.out.println(email.getMime());
    }
}