Get the Total Size of an IMAP Message

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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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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.

Chilkat.Imap imap = new Chilkat.Imap();

imap.Ssl = true;
imap.Port = 993;

success = imap.Connect("imap.example.com");
if (success == false) {
    Debug.WriteLine(imap.LastErrorText);
    return;
}

success = imap.Login("user@example.com","myPassword");
if (success == false) {
    Debug.WriteLine(imap.LastErrorText);
    return;
}

success = imap.SelectMailbox("Inbox");
if (success == false) {
    Debug.WriteLine(imap.LastErrorText);
    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;
Chilkat.Email email = new Chilkat.Email();
success = imap.FetchEmail(headersOnly,seqNum,useUid,email);
if (success == false) {
    Debug.WriteLine(imap.LastErrorText);
    return;
}

int sizeBytes = imap.GetMailSize(email);
Debug.WriteLine("Total message size: " + Convert.ToString(sizeBytes) + " bytes");

success = imap.Disconnect();
if (success == false) {
    Debug.WriteLine(imap.LastErrorText);
    return;
}