Email (SMTP) Configuration

Configure PHPMailer SMTP credentials to enable transactional emails for registration, verification, and password recovery.

Hotel Guevarini uses PHPMailer to send transactional emails. SMTP credentials are configured directly inside each PHP file that sends mail — there is no centralized config file for email.

Files That Require SMTP Configuration

You must update the credentials in all four of the following files. Each one handles a different email flow, and a missing or incorrect credential in any single file will break that specific flow.

File	Email Sent
php/auth/procesar_registro.php	Account verification email sent after public self-registration
php/auth/enviar_recuperacion.php	Password recovery link emailed to the user
php/auth/reenviar_verificacion.php	Re-sends the verification link to an unverified account
php/usuarios/guardar_usuario.php	Verification email sent when an administrator creates a user

You must update the SMTP credentials in all 4 files. Updating only some of them will leave certain email flows broken — for example, password recovery may work while admin-created user verification does not.

SMTP Configuration Block

Each of the four files contains a block like the following. The fields marked REEMPLAZAR (“replace”) must be filled in with your actual SMTP credentials:

$mail->isSMTP();
$mail->Host       = 'sandbox.smtp.mailtrap.io'; // O tu servidor SMTP
$mail->SMTPAuth   = true;
$mail->Username   = 'TU_USUARIO_SMTP';          // REEMPLAZAR
$mail->Password   = 'TU_PASSWORD_SMTP';          // REEMPLAZAR
$mail->SMTPSecure = 'tls';
$mail->Port       = 2525;

Setting Descriptions

Setting	Description
Host	The hostname of your SMTP server (e.g. sandbox.smtp.mailtrap.io or smtp.gmail.com).
SMTPAuth	Set to true to authenticate with the SMTP server using the credentials below.
Username	Your SMTP account username or API key, provided by your email service.
Password	Your SMTP account password or API secret.
SMTPSecure	Encryption method. 'tls' is used here, which works with STARTTLS on port 2525 or 587.
Port	The port your SMTP server listens on. Mailtrap sandbox uses 2525; most production providers use 587 (TLS) or 465 (SSL).

Example Configurations

Mailtrap (Testing)

Mailtrap’s sandbox captures all outgoing emails into a virtual inbox without delivering them to real addresses. This makes it ideal for local and staging environments.

$mail->Host       = 'sandbox.smtp.mailtrap.io';
$mail->SMTPAuth   = true;
$mail->Username   = 'your_mailtrap_username'; // from Mailtrap inbox credentials
$mail->Password   = 'your_mailtrap_password'; // from Mailtrap inbox credentials
$mail->SMTPSecure = 'tls';
$mail->Port       = 2525;

To get your credentials: log in to Mailtrap, open your inbox, go to SMTP Settings, and copy the username and password shown there.

Mailtrap is recommended for local and staging environments. It lets you test the full email flow — including clickable verification and recovery links — without risking mail delivery to real users or getting flagged as spam.

Production SMTP

For a live deployment, replace the Mailtrap settings with the credentials from your transactional email provider (e.g. SendGrid, Mailgun, Amazon SES, or your hosting provider’s SMTP relay).

$mail->Host       = 'smtp.your-provider.com';
$mail->SMTPAuth   = true;
$mail->Username   = 'your_smtp_username';
$mail->Password   = 'your_smtp_password';
$mail->SMTPSecure = 'tls';
$mail->Port       = 587; // or 465 for SSL

Check your provider’s documentation for the exact host, port, and encryption settings they require.

Where to Find the Block in Each File

The SMTP configuration appears inside a try block within the section of each file that handles email sending. Search for $mail->isSMTP() in any of the four files to jump directly to the configuration block.

$mail = new PHPMailer(true);
try {
    $mail->isSMTP();
    $mail->Host     = '...'; // <-- edit here
    $mail->Username = '...'; // <-- edit here
    $mail->Password = '...'; // <-- edit here
    $mail->Port     = ...;   // <-- edit here
    // ...
    $mail->send();
} catch (Exception $e) {
    // error handling
}