You have 4 'else if' statements but there is no initial 'if' statement.
Your code should look something like ...
<?php
$contacts = array("entered_email_adress@yourdomain.com", "Zoho_CRM@yourdomain.com", "Mail_Chimp@yourdomain.com");
foreach($contacts as $contact)
{
$to = $contact;
if (some test)
{
do_something();
}
else if($contact == "entered_email_adress@yourdomain.com")
{
... as in your original code
or, probably what you intended ...
<pre><?php
$contacts = array("entered_email_adress@yourdomain.com", "Zoho_CRM@yourdomain.com", "Mail_Chimp@yourdomain.com");
foreach($contacts as $contact)
{
$to = $contact;
if($contact == "entered_email_adress@yourdomain.com")
{
... as in your original code