How to send 2 emails

I'm trying to send emails to users who are registered on my site(like newsletter).
The problem is: I have e.g. 5 users and when I am sending email to them only the first user get email and another 4 get nothing.

 <?php
  public function sendEmail($name,$email,$text) {
   $users = $this->_mysqli->get("user",array("TRUE"));

   $headers = 'From: '.$email."\n"; 
   $headers .= 'Date: '.gmdate('D, d M Y H:i:s', time())."\n";  
   foreach($users as $user) {

 $sended = mail($user["email"],'Contact from example.com',$name.' with email    address: '.$email.' has contacted you: '.$text,$headers); 

    if($sended) {
     return true;
    }
  } 
 }
?>

Thank you for your help
I am using OOP

The problem is here:

foreach($users as $user) {

    $sended = mail(...);     
    if($sended) {
     return true;
    }
} 

You have a loop, but you leave it at the first cycle, when it succeeded.

I think you need this:

 <?php
  public function sendEmail($name,$email,$text) {
   $users = $this->_mysqli->get("user",array("TRUE"));

   $headers = 'From: '.$email."\n"; 
   $headers .= 'Date: '.gmdate('D, d M Y H:i:s', time())."\n";  
   foreach($users as $user) {

      $sended = mail($user["email"],'Contact from example.com',$name.' with email    address: '.$email.' has contacted you: '.$text,$headers); 

      if(!$sended) {
         return false;
      }
  } 
  return true;
 }
?>