Thunderbird and Outlook can auto configure their settings for the CNF email server.
We recommend doing a manual setup with Office365 (Outlook).
For outlook (Desktop version on Windows) to auto configure itself, you must use the classic "Mail" email account setup. The new Modern style setup wizard only automatically works for Office365 accounts.
Because each email client differs in how it presents and names configuration options, we can only provide general configuration guidance as below:
Protocol (Server Type): IMAP
Port: 993
Security: SSL/TLS
Authentication Type: Password
Server name: parcel.cnf.cornell.edu
IMAP Idle: Yes
Protocol: SMTP
Port: 587 (for outlook mobile use port 465)
Security: StartTLS
Authentication Type: Password
Server name: parcel.cnf.cornell.edu