mySMTP is a desktop SMTP relay server specially designed to handle huge mail request. It relays all your mails to their recipients directly without going through any ISP's mail server. Key Features: Ultra-fast multithreaded mail deliver engine; Reliable queue system, no more worry about PC hang, will resume sending from the mail it stopped; Unsuccessful mail will be retried 48 times by default, we ensure message conveyed if the recipient's e-mail is valid; By using external proxy servers, able to hide your IP address in order to protect your online privacy; Inbuilt MX record cache to reduce waiting time; Configurable listened IP and port, allows co-exist with other SMTP servers; Allows unlimited size of mail body, attachments, and recipients in a single mail; Detailed log file.