UCI Mail Servers/Ports For Thunderbird Outlook IMAP Hostname: outlook.office365.com Port: 993 Connection security: SSL/TLS Authentication method: OAuth2 User name: ucinetid@ad.uci.edu SMTP Server name: smtp.office365.com Port: 587 Connection security: STARTTLS Authentication method: OAuth2 User name: ucinetid@ad.uci.edu GMail IMAP Hostname: imap.gmail.com Port: 993 Connection security: SSL/TLS Authentication method: OAuth2 User name: ucinetid@uci.edu SMTP Server name: smtp.gmail.com Port: 465 Connection security: SSL/TLS Authentication method: OAuth2 User name: ucinetid@uci.edu