Hello.
You can use client-server system, like MyChat. Up to 20 online users is fully free. All features, like offline messages, broadcasts, chats, calls and files exchange are available in it.
This program works fine under Windows XP and newer systems.
Also, MyChat has the special console tool for sending messages from command line.
Some examples:
- Personal message for user:
mcconsole.exe /server="192.168.10.1" /privmsg /userfrom="S.John" /userto="17" /msg="Hello![CRLF]Please, check an email."
- Send message from external file, from embedded robot Elisa:
mcconsole.exe /server="mycompany.com" /privmsg /userto="******@mail.com" /msgfile="message.txt"
- Message into the text conference from domain user:
mcconsole.exe /server="213.130.24.149" /port="4000" /key="LDF2o8fG@#@Zf" /chanmsg /userfrom="mycorp.com/S.Ivkin" /uid="17" /msg="Channel message"
- Personal message to domain user from embedded robot:
mcconsole.exe /server="localhost" /privmsg /userto="office/A.Skorohod" /msg="Wake up, Neo :-)"