Users can find IMAP server hostname as suggested here . Note the incoming IMAP server name and verify the IMAP port number, which is typically 993. Look in cPanel’s left hand menu to find the name of your server. If you have gator123 then your secure server name is secure123.hostgator.com
IMAP SETTINGS DURING ACCOUNT SIGNUP
IMAP SETTINGS on IMPORT TAB
For assistance or questions, please contact firstname.lastname@example.org.