How do I get my iphone 4 to show a sent folder for my msn email account?

My msn email account stopped working last night on my iphone 4 and ipad2 after a hacker got into my account and I had to change passwords and my msn email account settings were cleared by MS. So I called Apple support and they had me delete my msn email account on both my iphone and ipad and then add them back. My email appears to be working fine on the phone and ipad, but the SENT folder for this account disappeared on both devices. I sent new messages and there is still no SENT folder. My other email account which is on my phone and ipad is imap and it has a sent folder. My msn account use to have a sent folder. Can anyone tell me what to do to get the SENT folder back for my msn account?

Thank You