Swaks is a featureful, flexible, scriptable, transaction-oriented
SMTP test tool.
- SMTP extensions including TLS, authentication, pipelining, 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
Website: http://www.jetmore.org/john/code/swaks/
