Privmsg
From Scriptwiki
The command mIRC use when you are chatting in channels and queries.
privmsg <target> :<message>
- <target> is where you want the message to end up. Can be multiple targets if you seperate them with a , (comma).
- <message> needs to be prefixed with a : (semicolon), otherwise the IRC server will only take the first word after target.
Examples
The example below will send "Hi guys!" to the channel #help.script.
/privmsg #help.script :Hi guys!
The next will send "How are you?" to both Dana and #help.script.
/privmsg Dana,#help.script :How are you?
See also
/msg is the most common command to use when sending messages in scripts.