wp_mail not delivering to CC

I have issue with wp_mail function, It is not delivering mails to CC recipient defined in header.

$headers = array('Content-Type: text/html; charset=UTF-8','Cc: test@testmail.com');

I tried also:

$headers = array('Content-Type: text/html; charset=UTF-8','Cc: Test Test <test@testmail.com>');

What am I doing wrong here?

How many English words
do you know?
Test your English vocabulary size, and measure
how many words do you know
Online Test
Powered by Examplum