This plugin will send a privmsg to users when joining a channel where it is enabled and a greeting message has been set. It is simple in that it does not consider netsplits or known users; it just sends the message for every join.

• supybot.plugins.Greet.enable (Boolean): Whether or not the plugin is active on the selected channel (default: False)
• supybot.plugins.Greet.message (String): The message to send to users when they join the selected channel
• supybot.plugins.Greet.grace (PositiveInteger): Grace period (in seconds) to avoid re-greeting someone after a kick, part, or join (default: 30)

To set these, use the config channel command.