To help with Miami's domain name tranistion, create a new email signature that informs email contacts of the change to MiamiOH.edu.
"Miami University has changed its domain to MiamiOH.edu. Please update my email address in your contact information toname@MiamiOH.edu. The former email@example.com will soon stop being forwarded."
Read instructions on how to add a Miami logo to your email signature.