Koma-Mail is a simple and lightweight email client software that can be run from a USB drive. The software allows you to send and receive email from your POP3/IMAP account. The software supports SSL and APOP, as well as some Option to block scripts, ActiveX and HTML for enhanced security. The software also includes a basic spam filtering option and can be used with multiple accounts and multiple users. Koma-Mail can import/export email messages and Contact details, maintains an encrypted database and even includes a simple RSS feed reader.