Feasability of a special requirement

Hi,

please excuse but i am completely new to Zimbra and zimlets. I only want to ensure that a special requierement is feasable with zimlets. I am not familar with the power and diversity of zimlets. So please be indulge.

Is it possible to develop a zimlet that takes an outgoing email before sending and rebuild it completely (e.g. add/remove/modify body and attachments, etc.) and send it in this new format to the recipients? Is it possible that such a zimlet also runs identical in the zimbra desktop?