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 <CkMailMan.h>
#include <CkMht.h>
#include <CkEmail.h>

void ChilkatSample(void)
    {
    // The mailman object is used for receiving (POP3)
    // and sending (SMTP) email.
    CkMailMan mailman;

    // 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.
    CkMht mht;

    // Any string argument automatically begins the 30-day trial.
    bool success;
    success = mailman.UnlockComponent("30-day trial");
    if (success != true) {
        printf("MailMan component unlock failed\n");
        return;
    }

    success = mht.UnlockComponent("30-day trial");
    if (success != true) {
        printf("Mht component unlock failed\n");
        return;
    }

    CkEmail *email = 0;

    // 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.
    mht.put_UseCids(true);

    email = mht.GetEmail("http://www.bonairefishing.com/");
    if (email == 0 ) {
        printf("%s\n",mht.lastErrorText());
        return;
    }

    email->put_Subject("Test HTML email");

    // This example is tested in:
    // Outlook 2000, Eudora 7, Mozilla Thunderbird 1.5.0.9, Outlook Express 6, GMail, Yahoo Mail
    email->AddTo("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
    email->AddTo("Chilkat on Yahoo","chilkat_software@yahoo.com");
    email->AddTo("Chilkat on GMail","chilkat.support@gmail.com");

    email->put_From("admin@chilkatsoft.com");

    mailman.put_SmtpHost("smtp.comcast.net");

    success = mailman.SendEmail(*email);
    if (success != true) {
        printf("%s\n",mailman.lastErrorText());
        return;
    }

    delete email;

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