Every company in which computers are connected to each other on a local network (LAN) always needs an essential program, and is a messaging service to send messages from one computer to another. If you have not opted for any, then a good option would be Net Send Lite, especially for its simplicity.
From Net Send Lite you can send any type of message from one device to another, because it automatically detects all the computers connected in the LAN and identifies them with their corresponding name within the workgroup. Just as you can send a message to a team, you can send the same message to several at once.
In the Net Send Lite configuration options you can specify that you always include the same message footer, so you can customize each of your messages more to your liking. It also allows you to specify the type of font, size, colors, etc., of the message.
You can free download Net Send Lite 32, 64 bit and safe install the latest trial or new full version for Windows 10 from the official site.