Delphi Code - Send Email from Microsoft Outlook

Here is a simple Delphi procedure that uses Microsoft Outlook to send email programmatically. The code works well whether or not Outlook is already open. However, please note that the code will not work if Outlook is closed, and your installed Outlook requires any form of authentication upon launching the program. The most relevant parts of the code are highlighted. Comments are included to explain the code. If you copy and paste the code into your program, be sure to change the form and procedure names to match your setup. For additional Outlook automation solutions, see Microsoft Outlook Automation with Delphi.

procedure TForm1.UseDelphiToSendEmailFromMicrosoftOutlook(Sender: TObject);
var
   OutlookApplication, OutlookMailItem: Variant;
begin
     //be sure ComObj and Variants units are included in the "uses" clause

     OutlookApplication := Null;
     OutlookMailItem := Null;

     try
        //create Outlook OLE
        OutlookApplication := CreateOleObject('Outlook.Application');
     except
           OutlookApplication := Null;
           //add error/exception handling code as desired
     end;

     If VarIsNull(OutlookApplication) = False then
        begin
             try
                //Create Outlook Mail Item
                try
                   OutlookMailItem := OutlookApplication.CreateItem(0);
                   //reference
                   //https://docs.microsoft.com/en-us/office/vba/api/outlook.mailitem
                except
                      OutlookMailItem := Null;
                      //add error/exception handling code as desired
                end;

                If VarIsNull(OutlookMailItem) = False then
                   begin
                        OutlookMailItem.To := 'recipient@example.com'; //change the recipient email address
                        OutlookMailItem.Subject := 'Sending email from Outlook programmatically';
                        OutlookMailItem.Body := 'This email is being sent from Outlook...';
                        OutlookMailItem.Send;
                        //reference
                        //https://docs.microsoft.com/en-us/office/vba/api/Outlook.MailItem.Send(method)
                   end;
             finally
                    OutlookMailItem := Unassigned;
                    OutlookApplication := Unassigned;
             end;
        end;
end;