(MFC) SMTP XOAUTH2 Authentication

Demonstrates how to authenticate using an OAuth2 access token. This example assumes you have already obtained the access token and now wish to use it in an SMTP session.

Chilkat C/C++ Library Downloads MS Visual C/C++ Libs

See Also: Using MFC CString in Chilkat

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

void ChilkatSample(void)
    {
    CkString strOut;

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

    bool success;
    const char *oauth2_access_token = "some_previously_obtained_token";

    CkMailMan mailman;

    // Set the properties for the SMTP server, whatever they may be..
    mailman.put_SmtpHost("smtp.example.com");
    mailman.put_SmtpPort(587);
    mailman.put_StartTLS(true);

    mailman.put_SmtpUsername("myLogin");
    mailman.put_OAuth2AccessToken(oauth2_access_token);

    // Create a new email object
    CkEmail email;

    email.put_Subject("This is a test");
    email.put_Body("This is a test");
    email.put_From("Joe Example <joe@example.com>");
    email.AddTo("Chilkat Admin","admin@chilkatsoft.com");

    // Connect to the server indicated by the SmtpHost property
    success = mailman.SmtpConnect();
    if (success != true) {
        strOut.append(mailman.lastErrorText());
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    // Authenticate using XOAUTH2 (using the OAuth2AccessToken)
    success = mailman.SmtpAuthenticate();
    if (success != true) {
        strOut.append(mailman.lastErrorText());
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    success = mailman.SendEmail(email);
    if (success != true) {
        strOut.append(mailman.lastErrorText());
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    strOut.append("Email sent.");
    strOut.append("\r\n");

    mailman.CloseSmtpConnection();


    SetDlgItemText(IDC_EDIT1,strOut.getUnicode());

    }