1. Download patch file from attached.
2. Backup directory “phpmailer”  (/libraries/phpmailer/ )
3. unzipped and upload to server “/libraries/phpmailer/ ” (phpmailer.php, smtp.php)
4. chmod 666 configuration.php
5. Login “Administrator Control Panel”
6. Edit “Global Configuration”

Mailer: SMTP Server
Mail From: username@gmail.com
SMTP Auth: Yes
SMTP User: username@gmail.com
SMTP Password: password
SMTP Host: ssl://smtp.gmail.com:465

7. chmod 644 configuration.php
8. Testing (Contact Us)

Finish.