You don't answer what you used for the From Address?
With Go Daddy, you must a valid email address for your domain as the from address.
you say that the email is being sent to one address, but it is being trapped in a spam folder, that may be caused by the subject line you use, or by the from address or a number of other factors.
for example, if the from address and the to address are the same, the server will treat that as spam and refuse to relay the email message.
if the email is being sent to one address and not others, that is a configuration on the SMTP server that is preventing the server from relaying to that email address.
Universal Email compiles the message, then passes it to the SMTP Server.
the SMTP Server then relays the email to the recipient. if it is relaying for some, then the SMTP Server configuration is causing it to deny the others. you would need to look at the SMTP server error logs to determine why.
