ZeRAT is a tiny (E)SMTP/POP3/NNTP console e-mail and news client, free from unwanted and useless bloatware features.
With this program you will be able to send the mail through (E)SMTP and receive the mail through POP3 protocols from any number of accounts. It is possible to send the messages in the plain text or HTML and attach files to messages. Basic NNTP (Network News protocol) commands are also supported.
For your anonymity, ZeRAT can operate through proxy server (supports SOCKS v5 protocol). Has HMAC-MD5 and MD5 SMTP/POP3 authorization and SSL support.
ZeRAT can send e-mails directly to recipients, bypassing your ISP's mail server and has other unique features.
It can work in the interactive mode which is ideal for cleaning up POP accounts, removing spam and large messages without downloading it to a local mailbox (supports national charsets and makes interactive POP session readable in most cases).
It fits easily on a floppy, making it easy to carry around. It requires no installation and no data is saved in the registry.