FileZilla Client, latest stable version
FileZilla Client is a fast and reliable cross-platform FTP, FTPS and SFTP client with lots of useful features and an intuitive graphical user interface.
If you like it, see some screenshots of FileZilla from here
PHPmailer
PHP mail with PHPmailer check more details at : http://phpmailer.codeworxtech.com/
SmartFTP
SmartFTP is an FTP (File Transfer Protocol) client which allows you to transfer files between your local computer and a server on the Internet. With its many basic and advanced features SmartFTP also offers secure, reliable and efficient transfers that make it a powerful tool.
PHP Mailer full
All new class.smtp.php that smaller and fast. The package is a signficant release that fully exploits PHP5/6 Exception Handling with exceptional ability to pass back the captured errors to your own scripts.
What FTP software should I use?
We recommend WinSCP and Filezilla for Windows users. 