feat: add OpenSSL setup guide and enhance email logging functionality

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