(C) Convert HTML Web Page to Email and Send

Converts an HTML page at a URL into an email with embedded images and sends it.

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

void ChilkatSample(void)
    {
    HCkMailMan mailman;
    HCkMht mht;
    HCkEmail email;
    const char *emlStr;
    BOOL success;

    // This example assumes the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    mailman = CkMailMan_Create();

    // The MHT component can be used to convert an HTML page
    // from a URL, file, or in-memory HTML into an email
    // with embedded images and style sheets.
    mht = CkMht_Create();

    email = CkEmail_Create();

    // There are two ways of embedding images in emails: with CIDs
    // and without.  When using CIDs, the IMG SRC attributes use
    // urls that begin with "cid:" and the corresponding image
    // embedded within the email includes a Content-ID header field.
    // When not using CIDs, the IMG SRC attribute can have a URL,
    // path, etc. and the corresponding image embedded within
    // the email has a matching Content-Location header field.

    // When testing with GMail, if CIDs are used the email will
    // be displayed with images blocked (by default) unless
    // the user allows them to be displayed.  Without CIDs,
    // the images are automatically displayed.

    // When testing with Eudora, Mozilla Thunderbird, and Outlook Express, 
    // embedded images display correctly with our without CIDs.

    // When testing with Yahoo! Mail, embedded images display OK.
    // However, the Yahoo! Mail user has the option of blocking
    // images.  If this is turned on, the CID images will still 
    // display correctly even though images are blocked.  Why?
    // It's because when viewing the email there is no external
    // HTTP request to fetch an image.  Therefore, a spammer 
    // cannot get an indication that you've read the email. 
    // However, if CIDs are not used, the images are blocked by 
    // any Yahoo! Mail user that has image blocking turned on --
    // even though the images are embedded.

    // I haven't tested Hotmail yet...
    // Regardless, there is no perfect solution.  If CIDs are used,
    // GMail users may block your embedded images, if CIDs are not
    // used, Yahoo! Mail users may block your embedded images.

    // I recommend setting using CIDs.  This is what Mozilla Thunderbird
    // does by default, and it's the more clear an unambiguous way
    // to indicate that images are indeed embedded.
    CkMht_putUseCids(mht,TRUE);

    emlStr = CkMht_getEML(mht,"http://www.bonairefishing.com/");
    if (CkMht_getLastMethodSuccess(mht) != TRUE) {
        printf("%s\n",CkMht_lastErrorText(mht));
        CkMailMan_Dispose(mailman);
        CkMht_Dispose(mht);
        CkEmail_Dispose(email);
        return;
    }

    success = CkEmail_SetFromMimeText(email,emlStr);
    if (success != TRUE) {
        printf("%s\n",CkEmail_lastErrorText(email));
        CkMailMan_Dispose(mailman);
        CkMht_Dispose(mht);
        CkEmail_Dispose(email);
        return;
    }

    CkEmail_putSubject(email,"Test HTML email");

    // This example is tested in:
    // Outlook 2000, Eudora 7, Mozilla Thunderbird 1.5.0.9, Outlook Express 6, GMail, Yahoo Mail
    success = CkEmail_AddTo(email,"Chilkat Support","support@chilkatsoft.com");

    // Note: Chilkat does not regularly check our GMail and Yahoo
    // email accounts.  Please send support email to support@chilkatsoft.com
    success = CkEmail_AddTo(email,"Chilkat on Yahoo","chilkat_software@yahoo.com");
    success = CkEmail_AddTo(email,"Chilkat on GMail","chilkat.support@gmail.com");

    CkEmail_putFrom(email,"chilkat@live.com");

    // Send email using smtp.live.com
    CkMailMan_putSmtpHost(mailman,"smtp.live.com");
    CkMailMan_putSmtpUsername(mailman,"chilkat@live.com");
    CkMailMan_putSmtpPassword(mailman,"myPassword");
    CkMailMan_putSmtpPort(mailman,587);
    CkMailMan_putStartTLS(mailman,TRUE);

    success = CkMailMan_SendEmail(mailman,email);
    if (success != TRUE) {
        printf("%s\n",CkMailMan_lastErrorText(mailman));
        CkMailMan_Dispose(mailman);
        CkMht_Dispose(mht);
        CkEmail_Dispose(email);
        return;
    }

    success = CkMailMan_CloseSmtpConnection(mailman);
    if (success != TRUE) {
        printf("%s\n",CkMailMan_lastErrorText(mailman));
        CkMailMan_Dispose(mailman);
        CkMht_Dispose(mht);
        CkEmail_Dispose(email);
        return;
    }

    printf("HTML Email Sent!\n");


    CkMailMan_Dispose(mailman);
    CkMht_Dispose(mht);
    CkEmail_Dispose(email);

    }