This plugin is very simple, it allows players to view a message that you have set when they join the server. The idea was based on this post:
(4) Looking for a chat MOTD (welcome message) plugin : admincraft (reddit.com)

Commands:
`/setchatmotd &6message to set to` - chatmotd.set
`/motd` - Show the MOTD (when a player runs it)

That's it, unless you want tellraw JSON support - read below!

Advanced:
This plugin supports tellraw JSON too.
To use the tellraw feature, follow these steps:

• 
  
  
  • Create a file called `chatmotd.json` in the ChatMOTD plugin directory.
  • Paste the exact JSON for your tell raw command, eg, the bit after the selector in the vanilla tellraw command.
  • If the `chatmotd.json` file is present, it will override the motd in `chatmotd.txt`. You also can't use `/setchatmotd` when the plugin is using `chatmotd.json` as Minecraft chat doesn't support enough characters to paste all the JSON in correctly. You must just edit the file directly.

You can use a tellraw generator like this one.

You can also disable the MOTD from showing to the player when they join by enabling `
disable_motd_on_join` in `config.yml`.