emClient does not connect to POP3/IMAP4 Servers

Hi

I am using EM-Client with a pop3/imap4 servers. The username format is “username” - but when emClient sends the Username its appending the hostnames and is in effect using the entire email address as the username “username@domain.com” how can we stop em-Client from doing this.

How can i connect to POP3/IMAP4 or SMTPS server with my Username with the @domain.com added to the username

best regards