Unicode C

Delete a POP3 Message via an Email Object

Demonstrates the Chilkat MailMan.DeleteEmail method, which deletes a POP3 message using the UIDL stored in the X-UIDL header of an Email object. The email must contain an X-UIDL header, which it does after being fetched from the server. This example fetches a message and then deletes it.

Background: When Chilkat downloads a POP3 message it records the server UIDL in an X-UIDL header on the Email object. DeleteEmail uses that header to tell the server which message to remove — a natural "process then delete" flow: fetch a message, act on it, then delete it. As always in POP3, the deletion is only committed when the session ends (unless ImmediateDelete is set).

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#include <C_CkMailManW.h>
#include <C_CkEmailW.h>

void ChilkatSample(void)
    {
    BOOL success;
    HCkMailManW mailman;
    HCkEmailW email;

    success = FALSE;

    //  Demonstrates the MailMan.DeleteEmail method, which deletes a POP3 message using the UIDL
    //  stored in the X-UIDL header of an Email object.  The email must contain an X-UIDL header
    //  (as it does after being fetched from the server).

    mailman = CkMailManW_Create();

    //  Configure the POP3 server connection.
    CkMailManW_putMailHost(mailman,L"pop.example.com");
    CkMailManW_putMailPort(mailman,995);
    CkMailManW_putPopSsl(mailman,TRUE);
    CkMailManW_putPopUsername(mailman,L"user@example.com");
    CkMailManW_putPopPassword(mailman,L"myPassword");

    //  Fetch a message (headers are enough; the X-UIDL header identifies it on the server).
    email = CkEmailW_Create();

    success = CkMailManW_FetchOne(mailman,TRUE,0,1,email);
    if (success == FALSE) {
        wprintf(L"%s\n",CkMailManW_lastErrorText(mailman));
        CkMailManW_Dispose(mailman);
        CkEmailW_Dispose(email);
        return;
    }

    //  Delete that message using its X-UIDL header.
    success = CkMailManW_DeleteEmail(mailman,email);
    if (success == FALSE) {
        wprintf(L"%s\n",CkMailManW_lastErrorText(mailman));
        CkMailManW_Dispose(mailman);
        CkEmailW_Dispose(email);
        return;
    }

    //  Unless the ImmediateDelete property is set to TRUE, the message is only marked for
    //  deletion.  End the POP3 session (which sends the QUIT command) to commit the deletion.
    success = CkMailManW_Pop3EndSession(mailman);
    if (success == FALSE) {
        wprintf(L"%s\n",CkMailManW_lastErrorText(mailman));
        CkMailManW_Dispose(mailman);
        CkEmailW_Dispose(email);
        return;
    }

    wprintf(L"Deleted the email from the POP3 server.\n");

    //  Note: Explicitly connecting/authenticating is optional.  Chilkat MailMan automatically
    //  connects and authenticates -- using the property settings above -- whenever a server
    //  operation requires it.  Calling the explicit connect/authenticate methods can still be
    //  helpful to determine whether a failure occurs while connecting or while authenticating.


    CkMailManW_Dispose(mailman);
    CkEmailW_Dispose(email);

    }