Email structure of sent VTODO

Cunnently jtx Board sends VTODO in emails with this structure:

Content-Type: multipart/mixed
  Content-Type: multipart/alternative
    Content-Type: text/plain; charset=utf-8
    Content-Type: text/html; charset=utf-8
  Content-Type: text/calendar

Consider changing it to:

Content-Type: multipart/alternative
  Content-Type: text/plain; charset=utf-8
  Content-Type: text/html; charset=utf-8
  Content-Type: text/calendar

That is: text/calendar, text/plain and text/html contain the same information in different formats and the MUA can decide which format(s) to show to the user.

This is how VEVENTs are usually sent.