domain = $_SERVER['HTTP_HOST'] ?? 'localhost';
}
private function buildProfessionalHeaders($fromName, $fromEmail, $replyTo = null) {
$messageId = $this->generateMessageId();
$replyTo = $replyTo ?: $fromEmail;
$headers = "From: \"{$fromName}\" <{$fromEmail}>\r\n";
$headers .= "Reply-To: \"{$fromName}\" <{$replyTo}>\r\n";
$headers .= "Return-Path: <{$fromEmail}>\r\n";
$headers .= "MIME-Version: 1.0\r\n";
$headers .= "Content-Type: text/html; charset=\"utf-8\"\r\n";
$headers .= "Content-Transfer-Encoding: quoted-printable\r\n";
$headers .= "Message-ID: {$messageId}\r\n";
$headers .= "Date: " . date('r') . "\r\n";
$headers .= "X-Mailer: PHP/" . phpversion() . "\r\n";
$headers .= "X-Priority: 3\r\n";
$headers .= "X-MSMail-Priority: Normal\r\n";
return $headers;
}
private function generateMessageId() {
return '<' . time() . '.' . uniqid() . '@' . $this->domain . '>';
}
private function encodeSubject($subject) {
return '=?UTF-8?Q?' . quoted_printable_encode($subject) . '?=';
}
private function formatEmailBody($htmlContent) {
// Converte para quoted-printable para melhor compatibilidade
$htmlContent = quoted_printable_encode($htmlContent);
return $htmlContent;
}
private function validateEmail($email) {
return filter_var(trim($email), FILTER_VALIDATE_EMAIL) !== false;
}
private function validateDomain($email) {
$domain = substr(strrchr($email, "@"), 1);
return checkdnsrr($domain, "MX");
}
private function extractEmailData($line) {
$data = explode(';', trim($line));
return [
'email' => trim($data[0] ?? ''),
'cnpj' => trim($data[1] ?? ''),
'razao' => trim($data[2] ?? ''),
'city' => trim($data[3] ?? '')
];
}
private function replacePersonalization($content, $data) {
$replacements = [
'{email}' => $this->sanitize($data['email']),
'{cnpj}' => $this->sanitize($data['cnpj']),
'{razao}' => $this->sanitize($data['razao']),
'{city}' => $this->sanitize($data['city']),
'{data}' => date('d/m/Y'),
'{hora}' => date('H:i')
];
return str_replace(array_keys($replacements), array_values($replacements), $content);
}
private function sanitize($text) {
return htmlspecialchars(trim($text), ENT_QUOTES, 'UTF-8');
}
public function sendBatch($postData) {
// Validações iniciais
if (!$this->validateEmail($postData['de'])) {
return "Erro: Email do remetente inválido
";
}
if (!$this->validateDomain($postData['de'])) {
return "Erro: Domínio do remetente não possui MX records válidos
";
}
$emails = array_filter(explode("\n", $postData['emails']));
if (empty($emails)) {
return "Erro: Nenhum email encontrado na lista
";
}
$results = [];
$successCount = 0;
$errorCount = 0;
foreach ($emails as $index => $line) {
$data = $this->extractEmailData($line);
if (!$this->validateEmail($data['email'])) {
$results[] = "#".($index+1)." {$data['email']} - EMAIL INVÁLIDO
";
$errorCount++;
continue;
}
if (!$this->validateDomain($data['email'])) {
$results[] = "#".($index+1)." {$data['email']} - DOMÍNIO INVÁLIDO
";
$errorCount++;
continue;
}
// Personaliza conteúdo
$personalizedSubject = $this->replacePersonalization($postData['assunto'], $data);
$personalizedMessage = $this->replacePersonalization($postData['html'], $data);
// Formata o corpo do email (usa o HTML exatamente como foi digitado)
$formattedBody = $this->formatEmailBody($personalizedMessage);
// Prepara headers
$headers = $this->buildProfessionalHeaders(
$postData['nome'],
$postData['de'],
$postData['reply_to'] ?? $postData['de']
);
// Envia email
$encodedSubject = $this->encodeSubject($personalizedSubject);
if (mail($data['email'], $encodedSubject, $formattedBody, $headers)) {
$results[] = "#".($index+1)." {$data['email']} - ENVIADO COM SUCESSO
";
$successCount++;
} else {
$results[] = "#".($index+1)." {$data['email']} - ERRO NO ENVIO
";
$errorCount++;
}
// Pausa estratégica para evitar spam detection
if (($index + 1) % 3 === 0) {
sleep(2);
}
}
$summary = "
Resumo do Envio
✅ Sucessos: {$successCount}
❌ Erros: {$errorCount}
📊 Total: " . count($emails) . "
";
return $summary . implode('', $results);
}
}
// Processamento do formulário
if ($_POST['action'] ?? '' === 'send_emails') {
$mailer = new ProfessionalMailer();
echo $mailer->sendBatch($_POST);
exit;
}
// HEADER UTF-8 CORRETO NO INÍCIO DO PHP
header('Content-Type: text/html; charset=utf-8');
?>
Sistema de Comunicação Corporativa