automatic conversion and send by mail

Hi all,
i'have a kindle PW, my girlfriend a Sony PRS-T2
When i download feed-news Calibre convert in MOBI and send automatically by mail to my andress, but not to my girlfirend's mail...
This because calibre send by mail when the first compatible format is ready.

My question:

There is any feature or plugin to convert downloaded news in more than format automatically?
or
there is a plugin that allow to convert all format needed in mailinglist automatically?

Thanx for answer
Marco. :)