I assume your roadrunner account will eventually be closed. If so, Return Path might ease your pain a little bit during this transitional stage. It's free. Years ago, one of my web email providers went belly up. I didn't have time to contact all those on my addressbook so I registered with Return Path. The service allowed me to authorize the email traffic from the closed account to my new one (I don't think I can explain myself too clearly. )

Read their FAQs and see if you want to give it a try. From their FAQs:

Return Path is an email change of address service that helps you stay connected after you change your email address. Friends, family and online relationships who only know your old email address can use our service to find your new email address....