Email accounts that do not end in @cumc.columbia.edu are managed by support groups other than CUIMC IT. For help with an email account that does not end in @cumc.columbia.edu:

Columbia University - addresses ending in @columbia.edu can find details and support at https://cuit.columbia.edu/email.

New York-Presbyterian Hospital - addresses ending in @nyp.org can to to NYP email page to see NYP support contact information on the left of the email page, or call extension 4-Help (212-746-4357). There is also a Forgot password? link under the sign in fields.

Alumni accounts - Columbia offers alumni a lifetime email address and email forwarding, see https://alumni.columbia.edu/content/alumni-e-mail. Be sure to review UNI account and Alumni Email details on the Columbia Alumni FAQ page.