diff --git a/php/OPENSSL_SETUP.md b/php/OPENSSL_SETUP.md
new file mode 100644
index 0000000..df6e21c
--- /dev/null
+++ b/php/OPENSSL_SETUP.md
@@ -0,0 +1,100 @@
+# Enabling OpenSSL Extension in PHP (Windows)
+
+## Problem
+Your PHP installation doesn't have the OpenSSL extension enabled, which is required for secure SMTP connections (TLS/SSL).
+
+Current error: `Unable to find the socket transport "ssl"` or `TLS/SSL transports not available`
+
+## Solution
+
+### Option 1: Enable OpenSSL in php.ini (Recommended)
+
+1. **Find your php.ini file:**
+   ```powershell
+   php --ini
+   ```
+   
+   If it shows "Loaded Configuration File: (none)", you need to create one:
+   ```powershell
+   # Find PHP installation directory
+   where.exe php
+   
+   # Copy the example php.ini
+   cd C:\path\to\php
+   copy php.ini-development php.ini
+   ```
+
+2. **Edit php.ini** and find this line:
+   ```ini
+   ;extension=openssl
+   ```
+   
+   Remove the semicolon to uncomment it:
+   ```ini
+   extension=openssl
+   ```
+
+3. **Restart your PHP server** (or command line if using built-in server)
+
+4. **Verify OpenSSL is enabled:**
+   ```powershell
+   php -m | Select-String -Pattern "openssl"
+   ```
+   
+   Should output: `openssl`
+
+### Option 2: Enable OpenSSL temporarily via command line
+
+You can enable OpenSSL for a single command:
+
+```powershell
+php -d extension=openssl test_email.php
+```
+
+Or for the built-in server:
+
+```powershell
+php -d extension=openssl -S localhost:8000
+```
+
+### Option 3: Install Composer and PHPMailer
+
+If you can't modify php.ini, install PHPMailer which may handle SMTP better:
+
+```powershell
+# Install Composer first (https://getcomposer.org/)
+# Then in the php/ directory:
+composer require phpmailer/phpmailer
+```
+
+The application will automatically detect and use PHPMailer if available.
+
+## Verifying the Fix
+
+After enabling OpenSSL, run the test:
+
+```powershell
+cd C:\Users\aky547\GitHub\SemapForm\php
+php test_email.php
+```
+
+You should see:
+- `Available transports: tcp, udp, ssl, tls` (or similar)
+- `TLS encryption enabled successfully`
+- `Email sent successfully via SMTP`
+
+## Alternative: Use a Different SMTP Port
+
+If you absolutely cannot enable OpenSSL, you could try:
+
+1. Contact your email administrator to see if there's an unencrypted SMTP port (not recommended for security)
+2. Use a different email solution (e.g., send via a web service API instead of SMTP)
+
+## Production Deployment
+
+On a production server (Linux/shared hosting):
+
+- OpenSSL is usually enabled by default
+- Check with `php -m | grep openssl`
+- If not available, contact your hosting provider
+- Most shared hosting environments have it pre-configured
diff --git a/php/README.md b/php/README.md
index 54126cb..84a0bb2 100644
--- a/php/README.md
+++ b/php/README.md
@@ -95,13 +95,61 @@
 - Set environment variables through hosting control panel
 - Test mail() function first before adding SMTP
 
+## Email Logging
+
+The application now includes comprehensive email logging:
+
+- **Log Location**: `php/mail.log`
+- **Log Format**: `[YYYY-MM-DD HH:MM:SS] [LEVEL] Message`
+- **Configuration**: 
+  - Set `LOG_ENABLED = true` in `config.php` to enable logging
+  - Logs are also written to PHP error_log with `[MAIL]` prefix
+
+### What Gets Logged
+
+- Email send attempts with from/to/subject
+- Email content length
+- SMTP connection details (host, port, encryption)
+- PHPMailer initialization and configuration steps
+- Success/failure status for each send attempt
+- Detailed error messages for failed sends
+- When mail is disabled (includes full XML content)
+
+### Viewing Logs
+
+```bash
+# View recent log entries
+tail -f php/mail.log
+
+# View last 50 lines
+tail -n 50 php/mail.log
+
+# Search for errors
+grep ERROR php/mail.log
+
+# Search for successful sends
+grep SUCCESS php/mail.log
+```
+
+### Log File Management
+
+The log file is automatically created when needed. To rotate logs:
+
+```bash
+# Manual rotation
+mv php/mail.log php/mail.log.$(date +%Y%m%d)
+touch php/mail.log
+chmod 666 php/mail.log
+```
+
 ## Troubleshooting
 
 ### Emails not sending
 1. Check `MAIL_ENABLED` is set to `true`
-2. Verify SMTP credentials are correct
-3. Check server error logs: `tail -f /var/log/apache2/error.log`
-4. Test with `MAIL_ENABLED=false` to see XML output in logs
+2. **Check `php/mail.log`** for detailed error messages
+3. Verify SMTP credentials are correct
+4. Check server error logs: `tail -f /var/log/apache2/error.log`
+5. Test with `MAIL_ENABLED=false` to see XML output in logs
 
 ### Form validation errors
 - Ensure all required fields have values
diff --git a/php/config.php b/php/config.php
index 4db6933..a975136 100644
--- a/php/config.php
+++ b/php/config.php
@@ -11,19 +11,23 @@ error_reporting(E_ALL);
 ini_set('display_errors', 1);
 
 // Email configuration
-define('MAIL_ENABLED', getenv('MAIL_ENABLED') !== false ? filter_var(getenv('MAIL_ENABLED'), FILTER_VALIDATE_BOOLEAN) : true);
-define('SMTP_HOST', getenv('SMTP_HOST') ?: 'smtp.ph-freiburg.de');
-define('SMTP_PORT', getenv('SMTP_PORT') ?: 465);
-define('SMTP_ENCRYPTION', 'ssl'); // 'ssl' or 'tls' or '' for none
-define('SMTP_USERNAME', getenv('MAIL_USERNAME') ?: '');
-define('SMTP_PASSWORD', getenv('MAIL_PASSWORD') ?: '');
-define('MAIL_FROM', getenv('MAIL_FROM') ?: 'alexander.kirchner@ph-freiburg.de');
-define('MAIL_TO', getenv('MAIL_TO') ?: 'semesterapparate@ph-freiburg.de');
+define('MAIL_ENABLED', true);//getenv('MAIL_ENABLED') !== false ? filter_var(getenv('MAIL_ENABLED'), FILTER_VALIDATE_BOOLEAN) : true);
+define('SMTP_HOST', 'smtp.ph-freiburg.de');//getenv('SMTP_HOST') ?: 'smtp.ph-freiburg.de');
+define('SMTP_PORT', 587);//getenv('SMTP_PORT') ?: 587); // Use 587 for TLS, 465 for SSL
+define('SMTP_ENCRYPTION', 'tls'); // 'ssl' or 'tls' or '' for none
+define('SMTP_USERNAME', 'aky547');//getenv('MAIL_USERNAME') ?: 'aky547');
+define('SMTP_PASSWORD', 'CMcDna3qPh2*n');//getenv('MAIL_PASSWORD') ?: 'CMcDna3qPh2*n');
+define('MAIL_FROM', 'alexander.kirchner@ph-freiburg.de');//getenv('MAIL_FROM') ?: 'alexander.kirchner@ph-freiburg.de');
+define('MAIL_TO', 'kirchneralexander020@gmail.com');//getenv('MAIL_TO') ?: 'kirchneralexander@proton.me');
 
 // Application settings
 define('BASE_PATH', __DIR__);
 define('STATIC_PATH', '/static');
 
+// Logging configuration
+define('LOG_FILE', BASE_PATH . '/mail.log');
+define('LOG_ENABLED', true);
+
 // Signature validation API (optional Python service)
 define('SIGNATURE_API_URL', getenv('SIGNATURE_API_URL') ?: 'http://localhost:8001');
 
diff --git a/php/elsa.php b/php/elsa.php
index b70b41b..0601f87 100644
--- a/php/elsa.php
+++ b/php/elsa.php
@@ -302,8 +302,8 @@
                     '<td><input type="text" name="herausgeber_signature[]" data-section="' + sectionId + '" placeholder="Optional"></td>' +
                     '<td><input type="number" name="herausgeber_pages_from[]" data-section="' + sectionId + '" required min="1"></td>' +
                     '<td><input type="number" name="herausgeber_pages_to[]" data-section="' + sectionId + '" required min="1"></td>' +
-                attachSignatureListeners(row);
                     '<td><button type="button" class="btn-icon" onclick="removeRow(\'' + rowId + '\')" title="Zeile entfernen"><span class="mdi mdi-delete"></span></button></td>';
+                attachSignatureListeners(row);
             }
         }
 
@@ -491,7 +491,9 @@
         function removeMediaSection(sectionId) {
             const section = document.getElementById(sectionId);
             if (section) {
-                if (const rows = section.querySelectorAll('tr[id]');
+                if (confirm('Möchten Sie diese Sektion wirklich entfernen?')) {
+                    const type = section.getAttribute('data-type');
+                    const rows = section.querySelectorAll('tr[id]');
                     rows.forEach(row => {
                         const signatureInput = row.querySelector('input[name*="_signature"]');
                         if (signatureInput) {
@@ -504,9 +506,7 @@
                         btn.disabled = false;
                         btn.title = 'Sektion hinzufügen';
                     }
-                    updateSubmitButton();   btn.disabled = false;
-                        btn.title = 'Sektion hinzufügen';
-                    }
+                    updateSubmitButton();
                 }
             }
         }
diff --git a/php/functions.php b/php/functions.php
index aad384d..cd1cc4c 100644
--- a/php/functions.php
+++ b/php/functions.php
@@ -1,55 +1,79 @@
 <?php
 require_once 'config.php';
 
+/**
+ * Write log message to file
+ */
+function writeLog($message, $level = 'INFO')
+{
+    if (!LOG_ENABLED) {
+        return;
+    }
+
+    $timestamp = date('Y-m-d H:i:s');
+    $logMessage = "[{$timestamp}] [{$level}] {$message}" . PHP_EOL;
+
+    // Also log to error_log for immediate visibility
+    error_log("[MAIL] {$message}");
+
+    // Write to log file
+    if (defined('LOG_FILE')) {
+        file_put_contents(LOG_FILE, $logMessage, FILE_APPEND | LOCK_EX);
+    }
+}
+
 /**
  * Validate email address
  */
-function validateEmail($email) {
+function validateEmail($email)
+{
     return preg_match(EMAIL_REGEX, $email);
 }
 
 /**
  * Sanitize input string
  */
-function sanitizeInput($input) {
+function sanitizeInput($input)
+{
     return htmlspecialchars(trim($input), ENT_QUOTES, 'UTF-8');
 }
 
 /**
  * Generate XML from form data
  */
-function generateXML($data) {
+function generateXML($data)
+{
     $xml = new DOMDocument('1.0', 'UTF-8');
     $xml->formatOutput = true;
-    
+
     $root = $xml->createElement('form_submission');
     $xml->appendChild($root);
-    
+
     // Static data
     $static = $xml->createElement('static');
     $root->appendChild($static);
-    
+
     foreach (['name', 'lastname', 'title', 'telno', 'mail', 'apparatsname', 'subject', 'semester', 'dauerapparat'] as $field) {
         if (isset($data[$field])) {
             $element = $xml->createElement($field, htmlspecialchars($data[$field]));
             $static->appendChild($element);
         }
     }
-    
+
     if (!empty($data['message'])) {
         $messageEl = $xml->createElement('message', htmlspecialchars($data['message']));
         $static->appendChild($messageEl);
     }
-    
+
     // Books
     if (isset($data['books']) && is_array($data['books'])) {
         $booksNode = $xml->createElement('books');
         $root->appendChild($booksNode);
-        
+
         foreach ($data['books'] as $book) {
             $bookNode = $xml->createElement('book');
             $booksNode->appendChild($bookNode);
-            
+
             foreach (['authorname', 'year', 'title', 'signature'] as $field) {
                 $value = isset($book[$field]) ? htmlspecialchars($book[$field]) : '';
                 $fieldNode = $xml->createElement($field, $value);
@@ -57,59 +81,69 @@ function generateXML($data) {
             }
         }
     }
-    
+
     return $xml->saveXML();
 }
 
 /**
  * Generate XML for ELSA form
  */
-function generateELSAXML($data) {
+function generateELSAXML($data)
+{
     $xml = new DOMDocument('1.0', 'UTF-8');
     $xml->formatOutput = true;
-    
+
     $root = $xml->createElement('elsa_submission');
     $xml->appendChild($root);
-    
+
     // General info
     $generalInfo = $xml->createElement('general_info');
     $root->appendChild($generalInfo);
-    
-    $generalFields = ['name', 'lastname', 'title', 'mail', 'subject', 'classname', 
-                      'usage_date_from', 'usage_date_to', 'availability_date'];
-    
+
+    $generalFields = [
+        'name',
+        'lastname',
+        'title',
+        'mail',
+        'subject',
+        'classname',
+        'usage_date_from',
+        'usage_date_to',
+        'availability_date'
+    ];
+
     foreach ($generalFields as $field) {
         if (isset($data[$field])) {
             $element = $xml->createElement($field, htmlspecialchars($data[$field]));
             $generalInfo->appendChild($element);
         }
     }
-    
+
     if (!empty($data['message'])) {
         $messageEl = $xml->createElement('message', htmlspecialchars($data['message']));
         $generalInfo->appendChild($messageEl);
     }
-    
+
     // Media sections
     $mediaRoot = $xml->createElement('media');
     $root->appendChild($mediaRoot);
-    
+
     // Add different media types (monografie, zeitschrift, herausgeber)
     $mediaTypes = [
         'monografien' => $data['monografien'] ?? [],
         'zeitschriftenartikel' => $data['zeitschriftenartikel'] ?? [],
         'herausgeberwerke' => $data['herausgeberwerke'] ?? []
     ];
-    
+
     foreach ($mediaTypes as $type => $entries) {
         if (!empty($entries)) {
             $section = $xml->createElement($type);
             $mediaRoot->appendChild($section);
-            
+
             foreach ($entries as $entry) {
                 $entryNode = $xml->createElement('entry');
                 $section->appendChild($entryNode);
-                
+
                 foreach ($entry as $key => $value) {
                     $fieldNode = $xml->createElement($key, htmlspecialchars($value));
                     $entryNode->appendChild($fieldNode);
@@ -117,7 +151,7 @@ function generateELSAXML($data) {
             }
         }
     }
-    
+
     return $xml->saveXML();
 }
 
@@ -125,71 +159,251 @@ function generateELSAXML($data) {
  * Send email with XML attachment
  * Uses PHP's mail() function or SMTP if configured
  */
-function sendEmail($subject, $xmlContent, $toEmail = null) {
+function sendEmail($subject, $xmlContent, $toEmail = null)
+{
     $to = $toEmail ?? MAIL_TO;
     $from = MAIL_FROM;
-    
+
+    writeLog("==========================================================");
+    writeLog("Email Send Attempt");
+    writeLog("From: {$from}");
+    writeLog("To: {$to}");
+    writeLog("Subject: {$subject}");
+    writeLog("Content Length: " . strlen($xmlContent) . " bytes");
+
     if (!MAIL_ENABLED) {
-        // Log instead of sending
-        error_log("==========================================================");
-        error_log("MAIL SENDING DISABLED - Would have sent:");
-        error_log("From: " . $from);
-        error_log("To: " . $to);
-        error_log("Subject: " . $subject);
-        error_log("----------------------------------------------------------");
-        error_log($xmlContent);
-        error_log("==========================================================");
+        writeLog("MAIL SENDING DISABLED - Email not sent", 'WARNING');
+        writeLog("XML Content:\n" . $xmlContent);
+        writeLog("==========================================================");
         return true;
     }
-    
+
     // Try using SMTP if credentials are configured
-    if (SMTP_USERNAME && SMTP_PASSWORD && class_exists('PHPMailer\PHPMailer\PHPMailer')) {
-        return sendEmailSMTP($subject, $xmlContent, $to, $from);
+    if (SMTP_USERNAME && SMTP_PASSWORD) {
+        writeLog("SMTP credentials configured, attempting SMTP send");
+        $result = sendEmailSMTP($subject, $xmlContent, $to, $from);
+
+        if ($result) {
+            writeLog("Email sent successfully via SMTP", 'SUCCESS');
+        } else {
+            writeLog("Email sending via SMTP failed", 'ERROR');
+        }
+
+        writeLog("==========================================================");
+        return $result;
     }
-    
-    // Fallback to PHP mail()
+
+    // Fallback to PHP mail() only if no SMTP credentials
+    writeLog("No SMTP credentials configured, using PHP mail() function");
     $headers = "From: " . $from . "\r\n";
     $headers .= "Content-Type: application/xml; charset=UTF-8\r\n";
     $headers .= "X-Mailer: PHP/" . phpversion();
-    
-    return mail($to, $subject, $xmlContent, $headers);
+
+    $result = mail($to, $subject, $xmlContent, $headers);
+
+    if ($result) {
+        writeLog("Email sent successfully via mail()", 'SUCCESS');
+    } else {
+        writeLog("Email sending via mail() failed", 'ERROR');
+    }
+
+    writeLog("==========================================================");
+    return $result;
 }
 
 /**
- * Send email via SMTP using PHPMailer (if available)
+ * Send email via SMTP using PHPMailer (if available) or native PHP sockets
  */
-function sendEmailSMTP($subject, $xmlContent, $to, $from) {
-    if (!class_exists('PHPMailer\PHPMailer\PHPMailer')) {
-        error_log("PHPMailer not available, falling back to mail()");
+function sendEmailSMTP($subject, $xmlContent, $to, $from)
+{
+    // Try PHPMailer first if available
+    if (class_exists('PHPMailer\PHPMailer\PHPMailer')) {
+        writeLog("Initializing PHPMailer for SMTP send");
+        writeLog("SMTP Host: " . SMTP_HOST . ":" . SMTP_PORT);
+        writeLog("SMTP Encryption: " . SMTP_ENCRYPTION);
+        writeLog("SMTP Username: " . SMTP_USERNAME);
+
+        $mail = new PHPMailer\PHPMailer\PHPMailer(true);
+
+        try {
+            // Server settings
+            $mail->isSMTP();
+            $mail->Host = SMTP_HOST;
+            $mail->SMTPAuth = true;
+            $mail->Username = SMTP_USERNAME;
+            $mail->Password = SMTP_PASSWORD;
+            $mail->SMTPSecure = SMTP_ENCRYPTION;
+            $mail->Port = SMTP_PORT;
+            $mail->CharSet = 'UTF-8';
+
+            writeLog("SMTP connection configured");
+
+            // Recipients
+            $mail->setFrom($from);
+            $mail->addAddress($to);
+
+            writeLog("Recipients configured");
+
+            // Content - XML as body
+            $mail->isHTML(false);
+            $mail->Subject = $subject;
+            $mail->Body = $xmlContent;
+            $mail->ContentType = 'text/plain';
+
+            writeLog("Sending email via SMTP...");
+            $mail->send();
+
+            writeLog("SMTP send() completed successfully", 'SUCCESS');
+            return true;
+        } catch (Exception $e) {
+            writeLog("SMTP Exception: " . $e->getMessage(), 'ERROR');
+            writeLog("PHPMailer ErrorInfo: " . $mail->ErrorInfo, 'ERROR');
+            return false;
+        }
+    }
+
+    // Helper function to read SMTP multi-line response
+    $readResponse = function ($socket) {
+        $response = '';
+        while ($line = fgets($socket, 515)) {
+            $response .= $line;
+            // Check if this is the last line (code followed by space, not hyphen)
+            if (preg_match('/^\d{3} /', $line)) {
+                break;
+            }
+        }
+        return $response;
+    };
+
+    // Fallback to native PHP SMTP
+    writeLog("PHPMailer not available, using native PHP SMTP implementation");
+    writeLog("SMTP Host: " . SMTP_HOST . ":" . SMTP_PORT);
+    writeLog("SMTP Encryption: " . SMTP_ENCRYPTION);
+
+    // Check if required transports are available
+    $transports = stream_get_transports();
+    writeLog("Available transports: " . implode(', ', $transports));
+
+    if (SMTP_ENCRYPTION === 'ssl' && !in_array('ssl', $transports)) {
+        writeLog("SSL transport not available. Enable OpenSSL extension in PHP.", 'ERROR');
+        writeLog("Try changing SMTP_ENCRYPTION to 'tls' and SMTP_PORT to 587 in config.php", 'ERROR');
         return false;
     }
-    
-    $mail = new PHPMailer\PHPMailer\PHPMailer(true);
-    
+
     try {
-        // Server settings
-        $mail->isSMTP();
-        $mail->Host = SMTP_HOST;
-        $mail->SMTPAuth = true;
-        $mail->Username = SMTP_USERNAME;
-        $mail->Password = SMTP_PASSWORD;
-        $mail->SMTPSecure = SMTP_ENCRYPTION;
-        $mail->Port = SMTP_PORT;
-        $mail->CharSet = 'UTF-8';
-        
-        // Recipients
-        $mail->setFrom($from);
-        $mail->addAddress($to);
-        
-        // Content
-        $mail->Subject = $subject;
-        $mail->Body = $xmlContent;
-        $mail->ContentType = 'application/xml';
-        
-        $mail->send();
-        return true;
+        // Build the connection string - always start with plain TCP for TLS
+        if (SMTP_ENCRYPTION === 'ssl') {
+            $host = 'ssl://' . SMTP_HOST;
+        } else {
+            $host = SMTP_HOST;
+        }
+        $timeout = 30;
+
+        writeLog("Connecting to {$host}:" . SMTP_PORT);
+        $smtp = @fsockopen($host, SMTP_PORT, $errno, $errstr, $timeout);
+
+        if (!$smtp) {
+            writeLog("Failed to connect: ({$errno}) {$errstr}", 'ERROR');
+            return false;
+        }
+
+        writeLog("Connected successfully");
+
+        // Read server response
+        $response = $readResponse($smtp);
+        writeLog("Server greeting: " . trim($response));
+
+        // Send EHLO
+        fputs($smtp, "EHLO " . SMTP_HOST . "\r\n");
+        $response = $readResponse($smtp);
+        writeLog("EHLO response: " . trim(str_replace("\r\n", " | ", $response)));
+
+        // Start TLS if needed and not using SSL
+        if (SMTP_ENCRYPTION === 'tls') {
+            fputs($smtp, "STARTTLS\r\n");
+            $response = $readResponse($smtp);
+            writeLog("STARTTLS response: " . trim($response));
+
+            if (strpos($response, '220') === 0) {
+                if (in_array('tls', $transports) || in_array('ssl', $transports)) {
+                    $crypto = @stream_socket_enable_crypto($smtp, true, STREAM_CRYPTO_METHOD_TLS_CLIENT);
+                    if ($crypto) {
+                        writeLog("TLS encryption enabled successfully");
+                        fputs($smtp, "EHLO " . SMTP_HOST . "\r\n");
+                        $response = $readResponse($smtp);
+                        writeLog("EHLO after TLS: " . trim(str_replace("\r\n", " | ", $response)));
+                    } else {
+                        writeLog("Failed to enable TLS encryption", 'WARNING');
+                        writeLog("Continuing without encryption (not recommended)", 'WARNING');
+                    }
+                } else {
+                    writeLog("TLS/SSL transports not available. Enable OpenSSL extension.", 'WARNING');
+                    writeLog("Continuing without encryption (not recommended)", 'WARNING');
+                }
+            }
+        }
+
+        // Authenticate
+        fputs($smtp, "AUTH LOGIN\r\n");
+        $response = $readResponse($smtp);
+        writeLog("AUTH response: " . trim($response));
+
+        fputs($smtp, base64_encode(SMTP_USERNAME) . "\r\n");
+        $response = $readResponse($smtp);
+
+        fputs($smtp, base64_encode(SMTP_PASSWORD) . "\r\n");
+        $response = $readResponse($smtp);
+
+        if (strpos($response, '235') !== 0) {
+            writeLog("Authentication failed: " . trim($response), 'ERROR');
+            fclose($smtp);
+            return false;
+        }
+
+        writeLog("Authentication successful");
+
+        // Send MAIL FROM
+        fputs($smtp, "MAIL FROM: <{$from}>\r\n");
+        $response = $readResponse($smtp);
+        writeLog("MAIL FROM response: " . trim($response));
+
+        // Send RCPT TO
+        fputs($smtp, "RCPT TO: <{$to}>\r\n");
+        $response = $readResponse($smtp);
+        writeLog("RCPT TO response: " . trim($response));
+
+        // Send DATA
+        fputs($smtp, "DATA\r\n");
+        $response = $readResponse($smtp);
+        writeLog("DATA response: " . trim($response));
+
+        // Send email headers and body
+        $headers = "From: {$from}\r\n";
+        $headers .= "To: {$to}\r\n";
+        $headers .= "Subject: {$subject}\r\n";
+        $headers .= "Content-Type: text/plain; charset=UTF-8\r\n";
+        $headers .= "X-Mailer: PHP/" . phpversion() . "\r\n";
+        $headers .= "\r\n";
+
+        fputs($smtp, $headers . $xmlContent . "\r\n.\r\n");
+        $response = $readResponse($smtp);
+        writeLog("Message response: " . trim($response));
+
+        // Quit
+        fputs($smtp, "QUIT\r\n");
+        $readResponse($smtp); // Read QUIT response
+        fclose($smtp);
+
+        if (strpos($response, '250') === 0) {
+            writeLog("Email sent successfully via native SMTP", 'SUCCESS');
+            return true;
+        } else {
+            writeLog("Email sending failed: " . trim($response), 'ERROR');
+            return false;
+        }
+
     } catch (Exception $e) {
-        error_log("Email sending failed: " . $mail->ErrorInfo);
+        writeLog("Native SMTP Exception: " . $e->getMessage(), 'ERROR');
         return false;
     }
 }
@@ -197,7 +411,8 @@ function sendEmailSMTP($subject, $xmlContent, $to, $from) {
 /**
  * Redirect to URL
  */
-function redirect($url) {
+function redirect($url)
+{
     header("Location: " . $url);
     exit;
 }
@@ -205,14 +420,16 @@ function redirect($url) {
 /**
  * Get POST value with default
  */
-function post($key, $default = '') {
+function post($key, $default = '')
+{
     return isset($_POST[$key]) ? sanitizeInput($_POST[$key]) : $default;
 }
 
 /**
  * Get all POST values matching a pattern (for arrays)
  */
-function postArray($key) {
-    return isset($_POST[$key]) && is_array($_POST[$key]) ? 
-           array_map('sanitizeInput', $_POST[$key]) : [];
+function postArray($key)
+{
+    return isset($_POST[$key]) && is_array($_POST[$key]) ?
+        array_map('sanitizeInput', $_POST[$key]) : [];
 }