Question

I have tried to embed the icalendar code in a email to be sent via indy with a content type text/calendar but it just hangs on the encoding of the email when I add as an attachment it just arrives as an attachment and does not prompt as other calendar request do. Has any one got example code of how to do calendar requests via indy?

Answer 1

Here is an alternative to RRUZ’s example:

program SendMailWithCalendarRequest; 
{$APPTYPE CONSOLE} 

uses 
  IdSMTP, 
  Classes, 
  DateUtils, 
  IdMessage, 
  SysUtils; 

 procedure SendCalendarRequest; 
 var 
  SMTP        : TIdSMTP; 
  MailMessage : TIdMessage; 
 begin 
   SMTP:= TIdSMTP.Create(nil); 
   MailMessage := TIdMessage.Create(nil); 
   try 
     SMTP.Host := 'smtp.mailserver.com'; 
     SMTP.Port := 25; 
     SMTP.Username := 'the account'; 
     SMTP.Password := 'the password'; 
     SMTP.AuthType := satDefault; 
     MailMessage.From.Address := '[e-mail]'; 
     MailMessage.Recipients.EMailAddresses := 'the Recipient'; 
     MailMessage.Subject := 'Send calendar'; 
     MailMessage.Body.Add('BEGIN:VCALENDAR'); 
     MailMessage.Body.Add('VERSION:1.0'); 
     MailMessage.Body.Add('BEGIN:VEVENT'); 
     MailMessage.Body.Add('ORGANIZER:MAILTO:'+SenderMail); 
     MailMessage.Body.Add('DTStart:'+FormatDateTime('YYYY-DD-DD',Now)); 
     MailMessage.Body.Add('DTEnd:'+FormatDateTime('YYYY-DD-DD',  Tomorrow)); 
     MailMessage.Body.Add('Location;ENCODING=QUOTED-PRINTABLE: My home'); 
     MailMessage.Body.Add('UID:'+FormatDateTime('YYYY-DD-DD',Now)+FormatDateTime('YYYY-DD-DD', Tomorrow)); 
     MailMessage.Body.Add('SUMMARY:Appointment Reminder'); 
     MailMessage.Body.Add('DESCRIPTION:Test message'); 
     MailMessage.Body.Add('PRIORITY:5'); 
     MailMessage.Body.Add('END:VEVENT'); 
     MailMessage.Body.Add('END:VCALENDAR'); 
     MailMessage.ContentType := 'text/calendar';
     SMTP.Connect; 
     try 
       try 
         SMTP.Send(MailMessage) ; 
         Writeln('OK') 
       except on E:Exception do 
         Writeln(0, 'ERROR: ' + E.Message) ; 
       end; 
     finally 
       SMTP.Disconnect; 
     end; 
   finally 
    SMTP.Free; 
    MailMessage.Free; 
   end; 
 end; 

begin 
  try 
    SendCalendarRequest; 
    readln; 
  except 
    on E: Exception do 
      Writeln(E.ClassName, ': ', E.Message); 
  end; 
end.