When it comes to sending e mails using a php script, GoDaddy is the most problematic host I have encountered.
I have run into issues with them where an e,mail was sending fine one day, but the next day, would not send at all.
sometimes i have seen it take as long as 24 hours to send an email.
Their email host is very sporadic at best.
Universal Email will only compile the email message and hand it over to the SMTP server. It is up to the SMTP server to relay the email message to the recipient.