Hi i've created this contact form to send messages. 
I've read it many times and i haven't found anything wrong. Any tip? 
When i press "enviar" (send) nothing happens. I've createad a new form option field related to "subject" ("assunto").
ps.:plz ignore the "mail@mail.com.br", in my tests i'm using the real one.
Hope you can help!
This is the PHP code i've inserted before the form tag. It's a code i've seen here but i've changed it to work to my site.
<?php $page = 'Contact'; 
    $to = "mail@mail.com.br"; 
    //$subject = "Company - Contato"; 
    if (isset($_POST['submit'])) { 
        // Error Checking 
        $errors = array(); 
        // Name Check 
        if (empty($_POST['name'])) { 
            $errors[] = 'Preencha corretamente o campo nome.'; 
        } 
        // Email Check 
        if (empty($_POST['email'])) { 
            $errors[] = 'Preencha corretamente o campo email.'; 
        } 
        // Assunto Check 
        if (empty($_POST['assunto'])) { 
            $errors[] = 'Preencha corretamente o campo assunto.'; 
        } 
        // Message check 
        if (empty($_POST['message'])) { 
            $errors[] = 'Preencha corretamente o campo mensagem'; 
        } 
        // If no errors - send email 
        if (empty($errors)) { 
            $name           = htmlentities($_POST['name']); 
            $email          = htmlentities($_POST['email']); 
            $assunto        = htmlentities($_POST['assunto']); 
            $subject = 'Company - Contato'; 
            $headers  = "From: $email" . "\r\n"; 
            $headers .= "Reply-To: $email" . "\r\n"; 
            $headers .= "MIME-Version: 1.0\r\n"; 
            $headers .= "Content-Type: text/html; charset=ISO-8859-1\r\n"; 
            $message = $_POST['message'];
            $message = '<html><body>'; 
            $message .= "<br />"; 
            $message .= "<br />"; 
            $message .= '<div style="font: 14px Arial, sans-serif; color: #333;">'; 
            $message .= "<b>Nome:</b> $name" . "\r\n"; 
            $message .= "<br />"; 
            $message .= "<b>Email:</b> $email" . "\r\n"; 
            $message .= "<br />"; 
            $message .= "<b>Assunto:</b> $assunto" . "\r\n"; 
            $message .= "<br />"; 
            $message .= "<b>Mensagem:</b>"; 
            $message .= "<br />"; 
            $message .= $_POST['message']; 
            $message .= "<br />"; 
            $message .= '</div>'; 
            $message .= "</body></html>"; 
            // Send Email 
            mail($to,$subject,$message,$headers); 
            // Set sent variable to allow sent message to be displayed 
            $sent = 'Sent'; 
        } 
    } 
    ?> 
    <?php if (!empty($errors)) { ?> 
        <div class="error"> 
            <ul> 
                <?php 
                foreach ($errors as $error) { 
                    echo '<li>'.$error.'</li>'; 
                } 
                ?> 
            </ul> 
        </div> 
    <?php } ?> 
    <?php if(isset($sent)) { ?> 
        <div class="success"> 
            <p>Sua mensagem foi enviada com sucesso.</p>
        </div> 
    <?php } ?>
Below i've inserted the form itself. As you can see, i've used the same 'names', but it's not working. :/
    <form name="htmlformContato" class="form-horizontal"  action="" accept-charset="UTF-8" method="post">
    <div class="col-sm-6 col-xs-12">
              <div class="form-group col-sm-12">
              <label for="inputNome" class="control-label">Nome *</label>
              <input id="inputNome" type="text" class="form-control" name="name" value="<?php echo $_POST['name']; ?>" />
              </div> 
              <div class="form-group col-sm-12">
              <label for="inputEmail" class="control-label">Email *</label>
              <input id="inputEmail" type="text" class="form-control" name="email" value="<?php echo $_POST['email']; ?>" />
              </div>
              <div class="form-group col-sm-12">
              <label for="inputAssunto" class="control-label">Assunto *</label>
              <select class="form-control" name="assunto">
                <option value="SelecioneAssunto">Selecione o assunto</option>
                <option value="Duvidas">Dúvidas</option>
                <option value="Sugestoes">Sugestões</option>
                <option value="Reclamacoes">Reclamações</option>
                <option value="Outro">Outro</option>
              </select>
              </div>                                  
    </div>
    <div class="col-sm-6 col-xs-12">
              <div class="form-group col-sm-12">
              <label for="inputMensagem" class="control-label">Mensagem *</label>
              <textarea class="form-control" rows="9" id="inputMensagem" name="message"><?php echo $_POST['message']; ?></textarea>
              </div>
    </div>
    <div class="col-xs-12">
              <div class="form-group col-xs-12">          
              <button type="submit" class="btn btn-bodyupA">Enviar</button>          
              </div>
    </div>          
    </form>