This is nice! I already used the first version and it worked really good. This is the fourth beta version and it is getting better every time. I import all those tasks into my Apple iCal after I sent me a task by email with an ICal task file attachment. That makes things so easy.
I also like the new feature which adds the task preferences as raw text to the email so if a contact's mailbox I send the task to does not support ICal nor VCal the user can still read it and knows what it is about.