I have failed.  
I'm not worthy.

Trying desperately to make claws work but, have had no success.
May I try this?...

Look at the settings below, and see what is wrong them:

Basic
Personal information

• Name of account: myusername
  Full name: myusername
  Mail address: myusername@ruggedinbox.com

Server information

• Protocol: Pop3
  Server for receiving: ruggedinbox.com
  SMTP server (send): ruggedinbox.com
  User ID:  myusername                                         Password: myPassword

SSL

• POP3
  Use SSL for POP3 connection: selected
  Send
  Use STARTTLS command to start SSL session: selected
  Client certificates
  Use non-blocking SSL:  de-selected
  

Advantage

• Everything deselected

Sign key

• Use default GnuPC key: selected

If you see what I have done wrong, let me know and I will make the adjustments.
I sure do appreciate the help.