Unicode C

Request a Return Receipt for an Email

Demonstrates the Chilkat Email.ReturnReceipt property. Set it to true to request a return-receipt when the message is received; this causes a Disposition-Notification-To header to be added when the email is sent. The default is false. This example enables the request.

Background: A return receipt (technically a Message Disposition Notification, MDN) asks the recipient's mail client to send back a small confirmation when the message is opened. It is only a request: the receiving client or server is free to ignore it, and many prompt the user before sending anything. Because of this, a return receipt is not reliable proof that a human actually read the message — treat it as a courtesy signal, not a guarantee.

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Unicode C

#include <C_CkEmailW.h>

void ChilkatSample(void)
    {
    HCkEmailW email;

    //  Demonstrates the Email.ReturnReceipt property.  Set to true to request a
    //  return-receipt when the email is received.  This causes a Disposition-Notification-To
    //  header to be added when the email is sent.  The default is false.

    email = CkEmailW_Create();
    CkEmailW_putSubject(email,L"Please confirm receipt");
    CkEmailW_putBody(email,L"Kindly confirm you received this message.");
    CkEmailW_putFrom(email,L"alice@example.com");
    CkEmailW_AddTo(email,L"Bob",L"bob@example.com");

    //  Request a return receipt.
    CkEmailW_putReturnReceipt(email,TRUE);

    wprintf(L"ReturnReceipt = %d\n",CkEmailW_getReturnReceipt(email));


    CkEmailW_Dispose(email);

    }