Updated: 02/27/2019 by Computer Hope
MSG in black lettering on green background.

Msg may refer to any of the following:

1. Shorthand for message, msg is commonly used in chat rooms for users who want to talk privately. Msg is also used in IRC (Internet Relay Chat) as a command to send messages privately to other users connected to IRC. Below is an example of how this command could be used.

/msg computerhope Hello, how are you?

In the command above, "Hello, how are you?" would be sent to the computerhope user. Most IRC programs also open a new chat window with the user you sent a message to continue the conversation.

2. With the Windows command line, msg is a command that lets you send messages to other computers on a network.

3. Microsoft Outlook e-mails have a .msg file extension when saved as a file. When a .msg file is opened, by default, it opens in Microsoft Outlook if it's installed on the computer.

Chat terms, IRC