Java

Force Quoted-Printable Encoding for Email

See more Email Object Examples

Demonstrates how to force the quoted-printable encoding for email. Chilkat2 Java

import com.chilkatsoft.chilkat2.Email;
import com.chilkatsoft.chilkat2.MailMan;

public class ChilkatExample {

    public static void main(String[] args) {
        Email email = new Email();

        email.setSubject("test");
        email.setFrom("bob@example.com");
        email.addTo("Mary", "mary@example.com");

        // Add plain-text and HTML alternative bodies.
        // Include some "=" chars so we can see the quoted-printable encoding when used..
        email.addPlainTextAlternativeBody("This is a test == Hello World!");
        email.addHtmlAlternativeBody("<html><body>This is a test == Hello World!</body></html>");

        // Examine the MIME of the email to see that it does not use quoted-printable.
        // (If the email contained non-usascii chars, it would automatically use quoted-printable.)
        MailMan mailman = new MailMan();
        System.out.println(mailman.renderToMime(email));

        // Here is the MIME before forcing quoted-printable.
        // Notice the Content-Transfer-Encoding is "7bit" (not "quoted-printable")

        // MIME-Version: 1.0
        // Date: Tue, 29 Sep 2020 12:26:52 -0500
        // Message-ID: <CF274FC0A2F82B98A05B7507DF7DFB966A2C0EB8@CHILKATSLICE>
        // Content-Type: multipart/alternative;
        //  boundary="------------080901080902080000030208"
        // X-Priority: 3 (Normal)
        // Subject: test
        // From: bob@example.com
        // To: Mary <mary@example.com>
        //
        // --------------080901080902080000030208
        // Content-Transfer-Encoding: 7bit
        // Content-Type: text/plain; charset=us-ascii; format=flowed
        //
        // This is a test == Hello World!
        // --------------080901080902080000030208
        // Content-Transfer-Encoding: 7bit
        // Content-Type: text/html; charset=us-ascii
        //
        // <html><body>This is a test == Hello World!</body></html>
        // --------------080901080902080000030208--

        System.out.println("----");

        // To force quoted-printable, set the Content-Transfer-Encoding header.
        // It will automatically propagate as needed to the MIME sub-parts.
        email.addHeaderField("Content-Transfer-Encoding", "quoted-printable");
        System.out.println(mailman.renderToMime(email));

        // MIME-Version: 1.0
        // Date: Tue, 29 Sep 2020 12:26:52 -0500
        // Message-ID: <F36B276E3A720FE5111D15CE9142C8909E1F5AB9@CHILKATSLICE>
        // Content-Type: multipart/alternative;
        //  boundary="------------080901080902080000030208"
        // X-Priority: 3 (Normal)
        // Subject: test
        // From: bob@example.com
        // To: Mary <mary@example.com>
        //
        // --------------080901080902080000030208
        // Content-Transfer-Encoding: quoted-printable
        // Content-Type: text/plain; charset=us-ascii; format=flowed
        //
        // This is a test =3D=3D Hello World!
        // --------------080901080902080000030208
        // Content-Transfer-Encoding: quoted-printable
        // Content-Type: text/html; charset=us-ascii
        //
        // <html><body>This is a test =3D=3D Hello World!</body></html>
        // --------------080901080902080000030208--
    }
}