(C) Read IMAP Email Headers

Call FetchHeaders to download only the email headers.

Chilkat C/C++ Library Downloads
MS Visual C/C++ Linux/CentOS C/C++ Alpine Linux C/C++ MAC OS X C/C++	armhf/aarch64 C/C++ C++ Builder iOS C/C++ Android C/C++	Solaris C/C++ MinGW C/C++

#include <C_CkImap.h>
#include <C_CkMessageSet.h>
#include <C_CkEmailBundle.h>
#include <C_CkEmail.h>

void ChilkatSample(void)
    {
    HCkImap imap;
    BOOL success;
    HCkMessageSet messageSet;
    BOOL fetchUids;
    HCkEmailBundle bundle;
    int i;
    HCkEmail email;
    int j;
    const char *name;
    const char *addr;
    int numAttach;
    int attachSize;

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

    imap = CkImap_Create();

    // Connect to an IMAP server.
    // Use TLS
    CkImap_putSsl(imap,TRUE);
    CkImap_putPort(imap,993);
    success = CkImap_Connect(imap,"imap.someMailServer.com");
    if (success != TRUE) {
        printf("%s\n",CkImap_lastErrorText(imap));
        CkImap_Dispose(imap);
        return;
    }

    // Login
    success = CkImap_Login(imap,"****","****");
    if (success != TRUE) {
        printf("%s\n",CkImap_lastErrorText(imap));
        CkImap_Dispose(imap);
        return;
    }

    // Select an IMAP mailbox
    success = CkImap_SelectMailbox(imap,"Inbox");
    if (success != TRUE) {
        printf("%s\n",CkImap_lastErrorText(imap));
        CkImap_Dispose(imap);
        return;
    }

    // We can choose to fetch UIDs or sequence numbers.
    fetchUids = TRUE;
    // Get the message IDs of all the emails in the mailbox
    messageSet = CkImap_Search(imap,"ALL",fetchUids);
    if (CkImap_getLastMethodSuccess(imap) != TRUE) {
        printf("%s\n",CkImap_lastErrorText(imap));
        CkImap_Dispose(imap);
        return;
    }

    // When downloading headers, each email object contains
    // (obviously) the headers, but the body will be missing.
    // Also, attachments will not be included.  However, it is
    // possible to get information about the attachments
    // as well as the complete size of the email.

    bundle = CkImap_FetchHeaders(imap,messageSet);
    if (CkImap_getLastMethodSuccess(imap) != TRUE) {
        CkMessageSet_Dispose(messageSet);
        printf("%s\n",CkImap_lastErrorText(imap));
        CkImap_Dispose(imap);
        return;
    }

    // Loop over the email objects and display information
    // about each:

    for (i = 0; i <= CkEmailBundle_getMessageCount(bundle) - 1; i++) {

        email = CkEmailBundle_GetEmail(bundle,i);

        // Display the From and Subject
        printf("%s\n",CkEmail_ck_from(email));
        printf("%s\n",CkEmail_subject(email));

        // Display the recipients:

        for (j = 0; j <= CkEmail_getNumTo(email) - 1; j++) {
            name = CkEmail_getToName(email,j);
            addr = CkEmail_getToAddr(email,j);
            printf("%s, %s\n",name,addr);
        }

        for (j = 0; j <= CkEmail_getNumCC(email) - 1; j++) {
            name = CkEmail_getCcName(email,j);
            addr = CkEmail_getCcAddr(email,j);
            printf("%s, %s\n",name,addr);
        }

        // Show the total size of the email, including body and attachments:
        printf("%d\n",CkEmail_getSize(email));

        // When a full email is downloaded, we would use the
        // email.NumAttachments property in conjunction with the
        // email.GetMailAttach* methods.
        // However, when an email object contains only the header,
        // we need to access the attachment info differently:
        numAttach = CkImap_GetMailNumAttach(imap,email);
        for (j = 0; j <= numAttach - 1; j++) {
            printf("%s\n",CkImap_getMailAttachFilename(imap,email,j));
            attachSize = CkImap_GetMailAttachSize(imap,email,j);
            printf("    size = %d bytes\n",attachSize);
        }

        printf("--\n");
        CkEmail_Dispose(email);
    }

    // Disconnect from the IMAP server.
    success = CkImap_Disconnect(imap);

    CkMessageSet_Dispose(messageSet);
    CkEmailBundle_Dispose(bundle);


    CkImap_Dispose(imap);

    }