General Settings
Account Name: your choice
Real name: your choice
Email address: your public email address

Incoming Server:
IMAP mail server (drop down selection)
Server: imap.powweb.com
Username: your true email address; make sure your "public" email address is not a forwarded address to something like username@pop.powweb.com ask CS is you're not sure.
Password: your password
Port: 143
Use secure connection (unchecked)
Use secure password (TLS): Auto
Verify Certificate (unchecked)

Outgoing Server
SMTP Server: smtp.powweb.com
Username: your true email address... see Incoming comment
Password: your password
Port: 587
Use secure connection (unchecked)
Use secure password (TLS): Auto
Verify Certificate (unchecked)