About

Swaks is a featureful, flexible, scriptable, transaction-oriented SMTP test tool written and maintained by John Jetmore. It is free to use and licensed under the GNU GPLv2.

Features include:

• SMTP extensions including TLS, authentication, pipelining, PROXY, PRDR, and XCLIENT
• Protocols including SMTP, ESMTP, and LMTP
• Transports including UNIX-domain sockets, internet-domain sockets (IPv4 and IPv6), and pipes to spawned processes
• Completely scriptable configuration, with option specification via environment variables, configuration files, and command line

Communications

• Send a mail to receive email when new versions are released
• Follow @SwaksSMTP on twitter
• Contact the author - suggestion, tips, patches, feedback, critiques always welcome
• Blog - Swaks-specific blog category (rss also available)
• Issues - Open an issue for feature requests and bugs