C

Auto-Generate or Explicitly Specify the Message-ID Email Header

Demonstrates how to auto-generate or explicitly specify the Message-ID header field. C

#include <C_CkEmail.h>
#include <C_CkMailMan.h>

void ChilkatSample(void)
    {
    BOOL success;
    HCkEmail email;
    HCkMailMan mailman;
    const char *mimeStr;

    success = FALSE;

    email = CkEmail_Create();

    CkEmail_putSubject(email,"test");
    CkEmail_putBody(email,"test");
    CkEmail_AddTo(email,"Joe","joe@example1.com");
    CkEmail_putFrom(email,"mary@example2.com");

    mailman = CkMailMan_Create();

    //  When the mailman sends email, it renders the email to be sent,
    //  and then sends the rendered MIME.

    //  Instead of actually sending the email, this example will render
    //  to MIME so we can see what would be sent..

    //  We can explicitly set the Message-ID like this:
    CkMailMan_putAutoGenMessageId(mailman,FALSE);
    CkEmail_AddHeaderField(email,"Message-ID","<xyz123@abc>");

    mimeStr = CkMailMan_renderToMime(mailman,email);
    printf("%s\n",mimeStr);

    //  This is what we get:

    //  MIME-Version: 1.0
    //  Date: Mon, 20 Jul 2020 17:20:09 -0500
    //  Message-ID: <xyz123@abc>
    //  Content-Type: text/plain; charset=us-ascii; format=flowed
    //  Content-Transfer-Encoding: 7bit
    //  X-Priority: 3 (Normal)
    //  Subject: test
    //  To: Joe <joe@example1.com>
    //  From: mary@example2.com
    //  
    //  test

    printf("--------\n");

    //  If we auto-generate...
    CkMailMan_putAutoGenMessageId(mailman,TRUE);
    mimeStr = CkMailMan_renderToMime(mailman,email);
    printf("%s\n",mimeStr);

    //  We get this:

    //  MIME-Version: 1.0
    //  Date: Mon, 20 Jul 2020 17:21:20 -0500
    //  Message-ID: <04EDE096BBFE484967F6398A973B0FCF6EA09A44@CHILKATSLICE>
    //  Content-Type: text/plain; charset=us-ascii; format=flowed
    //  Content-Transfer-Encoding: 7bit
    //  X-Priority: 3 (Normal)
    //  Subject: test
    //  To: Joe <joe@example1.com>
    //  From: mary@example2.com
    //  
    //  test


    CkEmail_Dispose(email);
    CkMailMan_Dispose(mailman);

    }