(Delphi DLL) Upload (Append) Email to an IMAP Mailbox and get the UID of the Appended Email

Upload / append an email to an IMAP mailbox and get the UID of the appended email.

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, Imap, Email;

...

procedure TForm1.Button1Click(Sender: TObject);
var
imap: HCkImap;
success: Boolean;
cap: PWideChar;
email: HCkEmail;
uidNext: Integer;

begin
// 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.someMailServer.com');
if (success <> True) then
  begin
    Memo1.Lines.Add(CkImap__lastErrorText(imap));
    Exit;
  end;

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

// Check the capabilities of the IMAP server.
cap := CkImap__capability(imap);
Memo1.Lines.Add('IMAP capabilities: ' + cap);

// If the capabilities string contains the substring "UIDPLUS", then 
// the UID of the appended email will be available in the AppendUid property (see below).

// For example, the GMail IMAP server has these capabilities (at this current time)
// * CAPABILITY IMAP4rev1 UNSELECT IDLE NAMESPACE QUOTA ID XLIST CHILDREN 
// X-GM-EXT-1 UIDPLUS COMPRESS=DEFLATE ENABLE MOVE CONDSTORE ESEARCH UTF8=ACCEPT 
// APPENDLIMIT=35882577 LIST-EXTENDED LIST-STATUS

email := CkEmail_Create();

// Load the email from a .eml file.
success := CkEmail_LoadEml(email,'myEmail.eml');
if (success <> True) then
  begin
    Memo1.Lines.Add(CkEmail__lastErrorText(email));
    Exit;
  end;

success := CkImap_AppendMail(imap,'Inbox',email);
if (success <> True) then
  begin
    Memo1.Lines.Add(CkImap__lastErrorText(imap));
    Exit;
  end;

// If the IMAP server supports the UIDPLUS extension, then the 
// imap.AppendUid will contain the UID of the appended email.
// Otherwise AppendUid will be 0.
Memo1.Lines.Add('UID of appended email: ' + IntToStr(CkImap_getAppendUid(imap)));

// If the IMAP server does NOT have UIDPLUS, then a program can 
// first select the mailbox, get the value of the UidNext property,
// and then append.  The appended email SHOULD have a UID equal to 
// the UidNext that was obtained just prior to appending (assuming no other
// program is simultaneously appending an email to the same mailbox).

// Note: It is not required to select a mailbox to append.  The select is only
// done for the purpose of obtaining the UIDNEXT value.
success := CkImap_SelectMailbox(imap,'Inbox');
if (success <> True) then
  begin
    Memo1.Lines.Add(CkImap__lastErrorText(imap));
    Exit;
  end;

uidNext := CkImap_getUidNext(imap);

success := CkImap_AppendMail(imap,'Inbox',email);
if (success <> True) then
  begin
    Memo1.Lines.Add(CkImap__lastErrorText(imap));
    Exit;
  end;

Memo1.Lines.Add('The UID of the appended email SHOULD be ' + IntToStr(uidNext));

Memo1.Lines.Add('Email uploaded to Inbox!');

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

CkImap_Dispose(imap);
CkEmail_Dispose(email);

end;