Delphi DLL Requires Chilkat v11.0.0+

Delete Email Individually (One at a time) from an IMAP Mailbox

Downloads email from an IMAP mailbox and deletes emails individually (one by one). Delphi DLL

var
success: Boolean;
imap: HCkImap;
fetchUids: Boolean;
messageSet: HCkMessageSet;
bundle: HCkEmailBundle;
headersOnly: Boolean;
email: HCkEmail;
i: Integer;
numEmails: Integer;

begin
success := False;

//  This example assumes 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.example.com');
if (success = False) then
  begin
    Memo1.Lines.Add(CkImap__lastErrorText(imap));
    Exit;
  end;

//  Login
success := CkImap_Login(imap,'myLogin','myPassword');
if (success = False) then
  begin
    Memo1.Lines.Add(CkImap__lastErrorText(imap));
    Exit;
  end;

//  Select an IMAP mailbox
success := CkImap_SelectMailbox(imap,'Inbox');
if (success = False) then
  begin
    Memo1.Lines.Add(CkImap__lastErrorText(imap));
    Exit;
  end;

//  We can choose to fetch UIDs or sequence numbers.
fetchUids := True;

//  Get the message IDs of all the emails in the mailbox
messageSet := CkMessageSet_Create();
success := CkImap_QueryMbx(imap,'ALL',fetchUids,messageSet);
if (success = False) then
  begin
    Memo1.Lines.Add(CkImap__lastErrorText(imap));
    Exit;
  end;

//  Fetch the emails into a bundle object:
bundle := CkEmailBundle_Create();
headersOnly := False;
success := CkImap_FetchMsgSet(imap,headersOnly,messageSet,bundle);
if (success = False) then
  begin
    Memo1.Lines.Add(CkImap__lastErrorText(imap));
    Exit;
  end;

//  To mark a complete set of emails for deletion, call SetFlags:
success := CkImap_SetFlags(imap,messageSet,'Deleted',1);
if (success = False) then
  begin
    Memo1.Lines.Add(CkImap__lastErrorText(imap));
    Exit;
  end;

//  Messages can also be marked for deletion individually:
//  Loop over the bundle and mark each message for deletion.
email := CkEmail_Create();
i := 0;
numEmails := CkEmailBundle_getMessageCount(bundle);
while i < numEmails do
  begin
    CkEmailBundle_EmailAt(bundle,i,email);

    Memo1.Lines.Add(CkEmail__from(email));
    Memo1.Lines.Add(CkEmail__subject(email));

    //  To delete this email, set the "Deleted" flag to 1.
    //  The email is not actually deleted until Expunge or
    //  ExpungeAndClose is called.
    success := CkImap_SetMailFlag(imap,email,'Deleted',1);
    if (success = False) then
      begin
        Memo1.Lines.Add(CkImap__lastErrorText(imap));
        Exit;
      end;

    Memo1.Lines.Add('--');

    i := i + 1;
  end;

success := CkImap_ExpungeAndClose(imap);
if (success = False) then
  begin
    Memo1.Lines.Add(CkImap__lastErrorText(imap));
    Exit;
  end;

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

CkImap_Dispose(imap);
CkMessageSet_Dispose(messageSet);
CkEmailBundle_Dispose(bundle);
CkEmail_Dispose(email);