In the US it's fairly common for "Alumni Associations" to offer "portable email" addresses, and a few other kinds of organizations do the same. You give people your address at the Alumni org, and it's automatically forwarded to whatever they have on file as your current "other" address. That way you only have one place to "edit" if your commercial email address changes, and you can impress people with your .edu addy -

but they also then have your addy to send all those solicitations for the Alumni fund(s)........

John