(Delphi ActiveX) Move Selected Emails to another Mailbox Folder

Downloads emails one by one in a selected mailbox, decides which emails are to be moved, and then moves the set of messages to another mailbox folder.

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

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

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

...

procedure TForm1.Button1Click(Sender: TObject);
var
success: Integer;
imap: TChilkatImap;
numEmails: Integer;
mset: TMessageSet;
email: TChilkatEmail;
i: Integer;
destFolder: WideString;

begin
success := 0;

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

imap := TChilkatImap.Create(Self);

// Connect to an IMAP server.
// Use TLS
imap.Ssl := 1;
imap.Port := 993;
success := imap.Connect('imap.example.com');
if (success = 0) then
  begin
    Memo1.Lines.Add(imap.LastErrorText);
    Exit;
  end;

// Login
success := imap.Login('myLogin','myPassword');
if (success = 0) then
  begin
    Memo1.Lines.Add(imap.LastErrorText);
    Exit;
  end;

// Select an IMAP mailbox
success := imap.SelectMailbox('Inbox');
if (success = 0) then
  begin
    Memo1.Lines.Add(imap.LastErrorText);
    Exit;
  end;

// Normally, when an email is downloaded, its "Seen" flag is automatically set.
// We don't want our program to be interfering with the "Seen" flags.
// To do this, set the PeekMode to 1.
imap.PeekMode := 1;

// After selecting the mailbox, the NumMessages property
// will contain the number of emails in the mailbox.
// When sequence numbers (not UIDs) are used to reference emails,
// they range from 1 to N, where N is the number of messages in the mailbox.
// This example will download the headers by sequence numbers.
numEmails := imap.NumMessages;

mset := TMessageSet.Create(Self);

// Indicate that mset contains sequence numbers, not UIDs.
mset.HasUids := 0;

// Fetch each email and decide for each if it is to be moved
// to a particular other mailbox.  If so, we'll add the sequence number to
// the mset, and then move all emails in the mset to the other mailbox.
email := TChilkatEmail.Create(Self);
i := 0;
while i < numEmails do
  begin
    // Fetch the email by sequence number.
    success := imap.FetchEmail(0,i + 1,0,email.ControlInterface);
    if (success = 0) then
      begin
        Memo1.Lines.Add(imap.LastErrorText);
        Exit;
      end;

    // If it is decided to move the email, add the sequence number to mset, like this:
    mset.InsertId(i + 1);

  end;

// If there are emails in mset to be moved, then do it..
if (mset.Count > 0) then
  begin
    destFolder := 'Inbox/SomeOtherFolder';
    // Assuming your IMAP server supports the feature that allows for messages to be moved to another folder...
    success := imap.MoveMessages(mset.ControlInterface,destFolder);
    if (success = 0) then
      begin
        Memo1.Lines.Add(imap.LastErrorText);
        Exit;
      end;

  end;

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