Unicode C

GMail App Password

See more GMail SMTP/IMAP/POP Examples

Demonstrates how to authenticate using an app password with GMail for IMAP and SMTP. Unicode C

#include <C_CkImapW.h>
#include <C_CkMailManW.h>

void ChilkatSample(void)
    {
    BOOL success;
    HCkImapW imap;
    HCkMailManW mailman;

    success = FALSE;

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

    // Starting May 30, 2022, Google will no longer support the use of third-party apps or devices 
    // which ask you to sign in to your Google Account using only your username and password.

    // Instead of authenticating with your GMail username/password, a GMail user can create an App Password
    // and then login using their username/app_password.   It's literally the same, except it allows a GMail
    // account owner to isolate passwords to specific applications.

    // The Gmail account owner would first need to make sure she has 2-Step Verification setup for her account.
    // Note: The 2FA verification is not a factor when authenticating with an app password. The 2FA is required
    // to setup app passwords in the Google account console.  See Sign in with App Passwords

    // After the GMail account owner has setup his app password, he simply uses the app password instead of his GMail account password.

    // For example:
    imap = CkImapW_Create();

    CkImapW_putSsl(imap,TRUE);
    CkImapW_putPort(imap,993);

    success = CkImapW_Connect(imap,L"imap.gmail.com");
    if (success == FALSE) {
        wprintf(L"%s\n",CkImapW_lastErrorText(imap));
        CkImapW_Dispose(imap);
        return;
    }

    success = CkImapW_Login(imap,L"user@gmail.com",L"srnyyvqajocnsvdp");
    if (success == FALSE) {
        wprintf(L"%s\n",CkImapW_lastErrorText(imap));
        CkImapW_Dispose(imap);
        return;
    }

    wprintf(L"IMAP Success!\n");

    // For SMTP..

    mailman = CkMailManW_Create();

    CkMailManW_putSmtpHost(mailman,L"smtp.gmail.com");

    CkMailManW_putSmtpUsername(mailman,L"user@gmail.com");
    CkMailManW_putSmtpPassword(mailman,L"srnyyvqajocnsvdp");

    CkMailManW_putSmtpSsl(mailman,TRUE);
    CkMailManW_putSmtpPort(mailman,465);

    success = CkMailManW_SmtpConnect(mailman);
    if (success == FALSE) {
        wprintf(L"%s\n",CkMailManW_lastErrorText(mailman));
        CkImapW_Dispose(imap);
        CkMailManW_Dispose(mailman);
        return;
    }

    success = CkMailManW_SmtpAuthenticate(mailman);
    if (success == FALSE) {
        wprintf(L"%s\n",CkMailManW_lastErrorText(mailman));
        CkImapW_Dispose(imap);
        CkMailManW_Dispose(mailman);
        return;
    }

    wprintf(L"SMTP Success!\n");


    CkImapW_Dispose(imap);
    CkMailManW_Dispose(mailman);

    }