With the recent update to MobileMe, I now have access to my email from another account in MobileMe through POP. All my emails on this other account appear in my MobileMe inbox as expected.

Using the web app, when sending a new email I am able to select this external address to use to send my emails, rather than using my MobileMe address.

On my iPhone however, I can not seem to work out how I may set it up so that emails I send using my iPhone are sent via this external address, as the currently are sent from me.com automatically.

Look forward to hearing any solutions, or if you want more information, please ask.