Fetch Oldest/Newest IMAP Email

Download Chilkat Email ActiveX

Emails may be downloaded by sequence number. Assuming the selected mailbox is not empty, the oldest email is at sequence number 1, and the newest email is at sequence number N. The FetchSingle method may be used to download by sequence number.

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uses
    Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
    Dialogs, StdCtrls,
    CHILKATIMAPLib_TLB,
    OleCtrls;

...

procedure TForm1.Button1Click(Sender: TObject);
var
imap: TChilkatImap;
success: Integer;
n: Integer;
isUid: Integer;
oldestEmail: CHILKATMAILLib2_TLB.IChilkatEmail2;
newestEmail: CHILKATMAILLib2_TLB.IChilkatEmail2;

begin
imap := TChilkatImap.Create(Self);

//  Anything unlocks the component and begins a fully-functional 30-day trial.
success := imap.UnlockComponent('Anything for 30-day trial');
if (success <> 1) then
  begin
    ShowMessage(imap.LastErrorText);
    Exit;
  end;

//  Connect to an IMAP server.
success := imap.Connect('mail.testemail.net');
if (success <> 1) then
  begin
    ShowMessage(imap.LastErrorText);
    Exit;
  end;

//  Login
success := imap.Login('***','***');
if (success <> 1) then
  begin
    ShowMessage(imap.LastErrorText);
    Exit;
  end;

//  Select an IMAP mailbox
success := imap.SelectMailbox('Inbox');
if (success <> 1) then
  begin
    ShowMessage(imap.LastErrorText);
    Exit;
  end;

//  After selecting a mailbox, the NumMessages property
//  contains the number of emails in the selected mailbox.

n := imap.NumMessages;

if (n > 0) then
  begin

    //  The oldest email is always at sequence number 1.
    isUid := 0;

    oldestEmail := imap.FetchSingle(1,isUid) As CHILKATMAILLib2_TLB.IChilkatEmail2;
    if (not (oldestEmail = nil )) then
      begin

        //  Display the From and Subject
        Memo1.Lines.Add(oldestEmail.FromAddress);
        Memo1.Lines.Add(oldestEmail.Subject);

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

      end;

    //  The newest email is at sequence number N:

    newestEmail := imap.FetchSingle(n,isUid) As CHILKATMAILLib2_TLB.IChilkatEmail2;
    if (not (newestEmail = nil )) then
      begin

        //  Display the From and Subject
        Memo1.Lines.Add(newestEmail.FromAddress);
        Memo1.Lines.Add(newestEmail.Subject);

      end;

  end;

//  Disconnect from the IMAP server.
imap.Disconnect();
end;