(Delphi DLL) Retrieve UIDL's from POP3 Server

Retrieve a list of UIDLs from a POP3 server. UIDLs are unique identifiers, 1 to 70 characters long, composed of characters ranging from 0x21 to 0x7E. These identifiers uniquely distinguish messages within a mailbox and remain consistent across sessions.

Note: This example requires Chilkat v11.0.0 or greater.

Chilkat for Delphi Downloads Chilkat non-ActiveX DLL for Delphi Chilkat ActiveX DLL for Delphi * The examples here use the non-ActiveX DLL.

uses
    Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
    Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, StringTable, Email, MailMan;

...

procedure TForm1.Button1Click(Sender: TObject);
var
success: Boolean;
mailman: HCkMailMan;
stUidls: HCkStringTable;
email: HCkEmail;
count: Integer;
i: Integer;
uidl: PWideChar;

begin
success := False;

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

mailman := CkMailMan_Create();

CkMailMan_putMailHost(mailman,'pop.example.com');

CkMailMan_putPopUsername(mailman,'myLogin');
CkMailMan_putPopPassword(mailman,'myPassword');

CkMailMan_putMailPort(mailman,995);
CkMailMan_putPopSsl(mailman,True);

stUidls := CkStringTable_Create();
success := CkMailMan_FetchUidls(mailman,stUidls);
if (success = False) then
  begin
    Memo1.Lines.Add(CkMailMan__lastErrorText(mailman));
    Exit;
  end;

// Download each email by UIDL.
email := CkEmail_Create();

count := CkStringTable_getCount(stUidls);
i := 0;
while i < count do
  begin
    // Download the full email.
    uidl := CkStringTable__stringAt(stUidls,i);
    success := CkMailMan_FetchByUidl(mailman,uidl,False,0,email);
    if (success = False) then
      begin
        Memo1.Lines.Add(CkMailMan__lastErrorText(mailman));
        Exit;
      end;

    Memo1.Lines.Add(IntToStr(i));
    Memo1.Lines.Add('UIDL: ' + uidl);
    Memo1.Lines.Add('From: ' + CkEmail__from(email));
    Memo1.Lines.Add('Subject: ' + CkEmail__subject(email));

    i := i + 1;
  end;

CkMailMan_Pop3EndSession(mailman);

CkMailMan_Dispose(mailman);
CkStringTable_Dispose(stUidls);
CkEmail_Dispose(email);

end;