My contact form does not respond the content that was filled in the fields.
Text in the mail that i get back is:
Name:
Email:
Betreff:
Nachricht:
No content

What’s wrong? I do not know what to do now.
Thanks for your help.
Tried a lot of different codes – but allways the same.

Here ist my code
mail_form.php

<form method="post" action="form-mail.php">
<label for="name"><b>Name:</b></label><br>
<input type="text" id="name" name="name"><br><br>
 

type here

<label for="email"><b>E-Mail:</b></label><br>
<input type="text" id="email" name="email"><br><br>
 
<label for="betreff"><b>Betreff:</b></label><br>
<input type="text" id="betreff" name="betreff"><br><br>
 
<label for="nachricht"><b>Nachrichta</b></label><br>
<textarea id="nachricht" name="nachricht" rows="10" cols="50"></textarea> <br><br>
 
<input type="submit" name="submit">
</form>

form-mail.php

<?php

$mailto =   '[email protected]';
$mailFrom = 'Form-Mailer PHP-Skript';
$name =         $_POST['name'];
$email =        $_POST['mail'];
$betreff =      $_POST['betreff'];
$betreff_combo = $_POST['betreff_combo'];
$alter_combo =  $_POST['alter_combo'];
$nachricht =    $_POST['nachricht'];
//$ergebnis =       $_POST['ergebnis'];


$mailSubject = "Formular: $name  $email  $betreff";

$returnPage = 'https://www.examplesite.com' ;


$mailContent = "Name:       $name
Email:      $email
Betreff:    $betreff_combo
Betreff:    $betreff
Alter:      $alter_combo
Nachricht:  $nachricht
____________________________________________
Ergebnis:   $ergebnis
";

$ergebnis = strtolower($ergebnis);
$ergebnis = 12;
//if ($ergebnis == '9' or $ergebnis == 'neun'){
if ($ergebnis == '12' or $ergebnis == 'zwölf' or $ergebnis == "zwoelf"){
// if ($ergebnis == '99' or $ergebnis == 'neunundneunzig'){
    if (isset($_POST)){
        foreach($POST as $name => $value){
            $mailContent .= $name . " : " . $value . "n";  
        echo 'schleife';
        }   
    }   
}
else{
    header ("Location:" . $returnError);
    echo 'Fehler';
    return;
}

    $mailSent = mail($mailto, $mailSubject, $mailContent, "From: " . $email) ;

    if ($mailSent == TRUE) {
        header ("Location: " . $returnPage);    
        echo 'fehler unten';
        }

exit();

echo 'ende';
?>