C++

Get the Total Size of an IMAP Message

Demonstrates the Chilkat Imap.GetMailSize method, which returns the complete server-reported size of a message in bytes, including attachment data. The only argument is the Email. This example fetches only the headers and prints the full message size.

Background: The server reports each message's total size, so this value is available even when only the headers were downloaded. That lets a client show a size column in a message list, sort by size, or warn the user before downloading an unusually large message — all without fetching the full body first.

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C++

#include <CkImap.h>
#include <CkEmail.h>

void ChilkatSample(void)
    {
    bool success = false;

    //  Demonstrates the Imap.GetMailSize method, which returns the complete server-reported size
    //  of a message in bytes, including attachments.  The only argument is the Email.

    CkImap imap;

    imap.put_Ssl(true);
    imap.put_Port(993);

    success = imap.Connect("imap.example.com");
    if (success == false) {
        std::cout << imap.lastErrorText() << "\r\n";
        return;
    }

    success = imap.Login("user@example.com","myPassword");
    if (success == false) {
        std::cout << imap.lastErrorText() << "\r\n";
        return;
    }

    success = imap.SelectMailbox("Inbox");
    if (success == false) {
        std::cout << imap.lastErrorText() << "\r\n";
        return;
    }

    //  Fetch only the message headers.  Attachment bodies are NOT downloaded, but the ckx-imap-*
    //  metadata describing the attachments is present, so the attachment info methods still work.
    bool headersOnly = true;
    bool useUid = false;
    int seqNum = 1;
    CkEmail email;
    success = imap.FetchEmail(headersOnly,seqNum,useUid,email);
    if (success == false) {
        std::cout << imap.lastErrorText() << "\r\n";
        return;
    }

    int sizeBytes = imap.GetMailSize(email);
    std::cout << "Total message size: " << sizeBytes << " bytes" << "\r\n";

    success = imap.Disconnect();
    if (success == false) {
        std::cout << imap.lastErrorText() << "\r\n";
        return;
    }
    }