(C++) Send HTML Email with Embedded Image Loaded from Memory

Demonstrates how to compose an HTML email with an embedded image where the image data is loaded directly from memory.

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#include <CkFileAccess.h>
#include <CkByteData.h>
#include <CkMailMan.h>
#include <CkEmail.h>
#include <CkStringBuilder.h>

void ChilkatSample(void)
    {
    // This example requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    // First load image data into memory.
    // This example loads image data from a file.
    // However, your application could get the image data from any other source, such as
    // from a database.
    CkFileAccess fac;
    CkByteData imageBytes;
    success = fac.ReadEntireFile("qa_data/jpg/starfish.jpg",imageBytes);

    // The mailman object is used for sending and receiving email.
    CkMailMan mailman;

    // Use your SMTP server hostname.  This example uses office365, but it could be any SMTP server..
    mailman.put_SmtpHost("outlook.office365.com");
    mailman.put_SmtpPort(587);
    mailman.put_StartTLS(true);

    // Set the SMTP login/password
    mailman.put_SmtpUsername("OFFICE365-SMTP-LOGIN");
    mailman.put_SmtpPassword("OFFICE365-SMTP-PASSWORD");

    // Create a new email object
    CkEmail email;
    email.put_Subject("HTML Email with Image Loaded from In-Memory Bytes");
    email.put_From("Chilkat Support <my-office365-user@mydomain.com>");
    email.AddTo("Chilkat Support","support@chilkatsoft.com");

    const char *contentIdStarfish = email.addRelatedData("starfish.jpg",imageBytes);
    if (email.get_LastMethodSuccess() != true) {
        std::cout << email.lastErrorText() << "\r\n";
        return;
    }

    // The src attribute for the image tag is set to the contentIdStarfish:
    CkStringBuilder sbHtml;
    sbHtml.Append("<html><body><p>This is an HTML email with an embedded image.</p>");
    sbHtml.Append("<p><img src=\"cid:CONTENT_ID_STARFISH\" /></p></body></html>");
    int numReplacements = sbHtml.Replace("CONTENT_ID_STARFISH",contentIdStarfish);

    email.SetHtmlBody(sbHtml.getAsString());

    bool success = mailman.SendEmail(email);
    if (success != true) {
        std::cout << mailman.lastErrorText() << "\r\n";
    }
    else {
        std::cout << "Mail Sent!" << "\r\n";
    }
    }